42634815 has 16 divisors (see below), whose sum is σ = 68322528. Its totient is φ = 22702976.

The previous prime is 42634771. The next prime is 42634817. The reversal of 42634815 is 51843624.

It is a cyclic number.

It is not a de Polignac number, because 42634815 - 2⁶ = 42634751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42634817) 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, 9757 + ... + 13433.

It is an arithmetic number, because the mean of its divisors is an integer number (4270158).

Almost surely, 2^42634815 is an apocalyptic number.

42634815 is a deficient number, since it is larger than the sum of its proper divisors (25687713).

42634815 is a wasteful number, since it uses less digits than its factorization.

42634815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458.

The product of its digits is 23040, while the sum is 33.

The square root of 42634815 is about 6529.5340568834. The cubic root of 42634815 is about 349.3452111425.

The spelling of 42634815 in words is "forty-two million, six hundred thirty-four thousand, eight hundred fifteen".