42864915 has 8 divisors (see below), whose sum is σ = 68583888. Its totient is φ = 22861280.

The previous prime is 42864911. The next prime is 42864923. The reversal of 42864915 is 51946824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42864915 - 2² = 42864911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42864911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428816 + ... + 1428845.

It is an arithmetic number, because the mean of its divisors is an integer number (8572986).

Almost surely, 2^42864915 is an apocalyptic number.

42864915 is a deficient number, since it is larger than the sum of its proper divisors (25718973).

42864915 is a wasteful number, since it uses less digits than its factorization.

42864915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857669.

The product of its digits is 69120, while the sum is 39.

The square root of 42864915 is about 6547.1302873855. The cubic root of 42864915 is about 349.9725556712.

The spelling of 42864915 in words is "forty-two million, eight hundred sixty-four thousand, nine hundred fifteen".