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142404101 = 731165413
BaseRepresentation
bin10000111110011…
…10101000000101
3100220221212200222
420133032220011
5242423412401
622044114125
73346262210
oct1037165005
9326855628
10142404101
1173424344
123b835945
132366c6a8
1414cac777
15c77dc1b
hex87cea05

142404101 has 8 divisors (see below), whose sum is σ = 163273344. Its totient is φ = 121666320.

The previous prime is 142404091. The next prime is 142404133. The reversal of 142404101 is 101404241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142404101 - 26 = 142404037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142404101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142404151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30530 + ... + 34883.

It is an arithmetic number, because the mean of its divisors is an integer number (20409168).

Almost surely, 2142404101 is an apocalyptic number.

It is an amenable number.

142404101 is a deficient number, since it is larger than the sum of its proper divisors (20869243).

142404101 is an equidigital number, since it uses as much as digits as its factorization.

142404101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65731.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142404101 is about 11933.3189431943. The cubic root of 142404101 is about 522.2047671664.

Adding to 142404101 its reverse (101404241), we get a palindrome (243808342).

The spelling of 142404101 in words is "one hundred forty-two million, four hundred four thousand, one hundred one".

Divisors: 1 7 311 2177 65413 457891 20343443 142404101