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142110241 = 721321312
BaseRepresentation
bin10000111100001…
…10111000100001
3100220101221121021
420132012320201
5242340011431
622033525441
73343626400
oct1036067041
9326357537
10142110241
1173243589
123b713881
1323598a00
1414c33637
15c721b11
hex8786e21

142110241 has 27 divisors (see below), whose sum is σ = 180383283. Its totient is φ = 111580560.

The previous prime is 142110239. The next prime is 142110247. The reversal of 142110241 is 142011241.

It is a happy number.

The square root of 142110241 is 11921.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21022225 + 121088016 = 4585^2 + 11004^2 .

It is not a de Polignac number, because 142110241 - 21 = 142110239 is a prime.

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142110247) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1084746 + ... + 1084876.

Almost surely, 2142110241 is an apocalyptic number.

142110241 is the 11921-st square number.

142110241 is the 5961-st centered octagonal number.

It is an amenable number.

142110241 is a deficient number, since it is larger than the sum of its proper divisors (38273042).

142110241 is an equidigital number, since it uses as much as digits as its factorization.

142110241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The cubic root of 142110241 is about 521.8453187895.

Multiplying 142110241 by its sum of digits (16), we get a square (2273763856 = 476842).

Multiplying 142110241 by its product of nonzero digits (64), we get a square (9095055424 = 953682).

Adding to 142110241 its reverse (142011241), we get a palindrome (284121482).

The spelling of 142110241 in words is "one hundred forty-two million, one hundred ten thousand, two hundred forty-one".

Divisors: 1 7 13 49 91 131 169 637 917 1183 1703 6419 8281 11921 17161 22139 83447 120127 154973 223093 840889 1084811 1561651 2900209 10931557 20301463 142110241