42631215 has 32 divisors (see below), whose sum is σ = 76432896. Its totient is φ = 20108160.

The previous prime is 42631181. The next prime is 42631243. The reversal of 42631215 is 51213624.

It is not a de Polignac number, because 42631215 - 2⁶ = 42631151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2614 + ... + 9596.

It is an arithmetic number, because the mean of its divisors is an integer number (2388528).

Almost surely, 2^42631215 is an apocalyptic number.

42631215 is a deficient number, since it is larger than the sum of its proper divisors (33801681).

42631215 is a wasteful number, since it uses less digits than its factorization.

42631215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039.

The product of its digits is 1440, while the sum is 24.

The square root of 42631215 is about 6529.2583805513. The cubic root of 42631215 is about 349.3353781914.

Adding to 42631215 its reverse (51213624), we get a palindrome (93844839).

The spelling of 42631215 in words is "forty-two million, six hundred thirty-one thousand, two hundred fifteen".