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142392572 = 2275085449
BaseRepresentation
bin10000111110010…
…11110011111100
3100220221021212222
420133023303330
5242423030242
622043544512
73346213460
oct1037136374
9326837788
10142392572
1173416713
123b82b138
132366737a
1414ca84a0
15c77a5d2
hex87cbcfc

142392572 has 12 divisors (see below), whose sum is σ = 284785200. Its totient is φ = 61025376.

The previous prime is 142392571. The next prime is 142392577. The reversal of 142392572 is 275293241.

It is a happy number.

142392572 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142392571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542697 + ... + 2542752.

It is an arithmetic number, because the mean of its divisors is an integer number (23732100).

Almost surely, 2142392572 is an apocalyptic number.

It is an amenable number.

142392572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142392572 is a wasteful number, since it uses less digits than its factorization.

142392572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085460 (or 5085458 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 142392572 is about 11932.8358741751. The cubic root of 142392572 is about 522.1906742641.

The spelling of 142392572 in words is "one hundred forty-two million, three hundred ninety-two thousand, five hundred seventy-two".

Divisors: 1 2 4 7 14 28 5085449 10170898 20341796 35598143 71196286 142392572