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142469913 = 393750683
BaseRepresentation
bin10000111110111…
…10101100011001
3100221002012222110
420133132230121
5242433014123
622045342533
73346655115
oct1037365431
9327065873
10142469913
1173469833
123b867a49
1323693631
1414cc8745
15c793493
hex87deb19

142469913 has 8 divisors (see below), whose sum is σ = 190166368. Its totient is φ = 94876704.

The previous prime is 142469897. The next prime is 142469917. The reversal of 142469913 is 319964241.

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

It is not a de Polignac number, because 142469913 - 24 = 142469897 is a prime.

It is a super-2 number, since 2×1424699132 = 40595352220455138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142469917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22531 + ... + 28152.

It is an arithmetic number, because the mean of its divisors is an integer number (23770796).

Almost surely, 2142469913 is an apocalyptic number.

It is an amenable number.

142469913 is a deficient number, since it is larger than the sum of its proper divisors (47696455).

142469913 is an equidigital number, since it uses as much as digits as its factorization.

142469913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51623.

The product of its digits is 46656, while the sum is 39.

The square root of 142469913 is about 11936.0761140335. The cubic root of 142469913 is about 522.2852003537.

The spelling of 142469913 in words is "one hundred forty-two million, four hundred sixty-nine thousand, nine hundred thirteen".

Divisors: 1 3 937 2811 50683 152049 47489971 142469913