42232815 has 12 divisors (see below), whose sum is σ = 73203624. Its totient is φ = 22524144.

The previous prime is 42232789. The next prime is 42232823. The reversal of 42232815 is 51823224.

It is not a de Polignac number, because 42232815 - 2⁵ = 42232783 is a prime.

It is a super-2 number, since 2×42232815² = 3567221325648450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469209 + ... + 469298.

It is an arithmetic number, because the mean of its divisors is an integer number (6100302).

Almost surely, 2^42232815 is an apocalyptic number.

42232815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42232815 is a deficient number, since it is larger than the sum of its proper divisors (30970809).

42232815 is a wasteful number, since it uses less digits than its factorization.

42232815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938518 (or 938515 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 42232815 is about 6498.6779424741. The cubic root of 42232815 is about 348.2437600523.

The spelling of 42232815 in words is "forty-two million, two hundred thirty-two thousand, eight hundred fifteen".