42562521 has 12 divisors (see below), whose sum is σ = 61888320. Its totient is φ = 28186200.

The previous prime is 42562519. The next prime is 42562537. The reversal of 42562521 is 12526524.

It is not a de Polignac number, because 42562521 - 2¹ = 42562519 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42562571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14301 + ... + 17018.

It is an arithmetic number, because the mean of its divisors is an integer number (5157360).

Almost surely, 2^42562521 is an apocalyptic number.

It is an amenable number.

42562521 is a deficient number, since it is larger than the sum of its proper divisors (19325799).

42562521 is a wasteful number, since it uses less digits than its factorization.

42562521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31476 (or 31473 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 42562521 is about 6523.9957847932. The cubic root of 42562521 is about 349.1476429417.

The spelling of 42562521 in words is "forty-two million, five hundred sixty-two thousand, five hundred twenty-one".