42510523 has 16 divisors (see below), whose sum is σ = 49338720. Its totient is φ = 36198400.

The previous prime is 42510511. The next prime is 42510527. The reversal of 42510523 is 32501524.

It is a cyclic number.

It is not a de Polignac number, because 42510523 - 2²¹ = 40413371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42510494 and 42510503.

It is not an unprimeable number, because it can be changed into a prime (42510527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52143 + ... + 52951.

It is an arithmetic number, because the mean of its divisors is an integer number (3083670).

Almost surely, 2^42510523 is an apocalyptic number.

42510523 is a deficient number, since it is larger than the sum of its proper divisors (6828197).

42510523 is a wasteful number, since it uses less digits than its factorization.

42510523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 42510523 is about 6520.0094325085. The cubic root of 42510523 is about 349.0054021709.

The spelling of 42510523 in words is "forty-two million, five hundred ten thousand, five hundred twenty-three".