42497292 has 12 divisors (see below), whose sum is σ = 99160376. Its totient is φ = 14165760.

The previous prime is 42497269. The next prime is 42497293. The reversal of 42497292 is 29279424.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 42497292.

It is not an unprimeable number, because it can be changed into a prime (42497293) 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, 1770709 + ... + 1770732.

Almost surely, 2^42497292 is an apocalyptic number.

It is an amenable number.

42497292 is an abundant number, since it is smaller than the sum of its proper divisors (56663084).

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

42497292 is a wasteful number, since it uses less digits than its factorization.

42497292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541448 (or 3541446 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 42497292 is about 6518.9947077751. The cubic root of 42497292 is about 348.9691901987.

The spelling of 42497292 in words is "forty-two million, four hundred ninety-seven thousand, two hundred ninety-two".