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142078724 = 22172089393
BaseRepresentation
bin10000111011111…
…11001100000100
3100220100100100222
420131333030010
5242333004344
622033123512
73343435454
oct1035771404
9326310328
10142078724
1173221937
123b6b9598
1323587568
1414c25d64
15c7175ee
hex877f304

142078724 has 12 divisors (see below), whose sum is σ = 263263644. Its totient is φ = 66860544.

The previous prime is 142078721. The next prime is 142078747. The reversal of 142078724 is 427870241.

It is a happy number.

142078724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 112572100 + 29506624 = 10610^2 + 5432^2 .

It is not an unprimeable number, because it can be changed into a prime (142078721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1044629 + ... + 1044764.

It is an arithmetic number, because the mean of its divisors is an integer number (21938637).

Almost surely, 2142078724 is an apocalyptic number.

It is an amenable number.

142078724 is a deficient number, since it is larger than the sum of its proper divisors (121184920).

142078724 is a wasteful number, since it uses less digits than its factorization.

142078724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089414 (or 2089412 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 142078724 is about 11919.6780157855. The cubic root of 142078724 is about 521.8067379085.

The spelling of 142078724 in words is "one hundred forty-two million, seventy-eight thousand, seven hundred twenty-four".

Divisors: 1 2 4 17 34 68 2089393 4178786 8357572 35519681 71039362 142078724