42502815 has 24 divisors (see below), whose sum is σ = 73932768. Its totient is φ = 22587840.

The previous prime is 42502783. The next prime is 42502841. The reversal of 42502815 is 51820524.

It is a happy number.

It is not a de Polignac number, because 42502815 - 2⁵ = 42502783 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12477 + ... + 15513.

It is an arithmetic number, because the mean of its divisors is an integer number (3080532).

Almost surely, 2^42502815 is an apocalyptic number.

42502815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42502815 is a deficient number, since it is larger than the sum of its proper divisors (31429953).

42502815 is a wasteful number, since it uses less digits than its factorization.

42502815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359 (or 3356 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 42502815 is about 6519.4183022721. The cubic root of 42502815 is about 348.9843070313.

The spelling of 42502815 in words is "forty-two million, five hundred two thousand, eight hundred fifteen".