42839015 has 16 divisors (see below), whose sum is σ = 55036800. Its totient is φ = 31912992.

The previous prime is 42839011. The next prime is 42839023. The reversal of 42839015 is 51093824.

It is a cyclic number.

It is not a de Polignac number, because 42839015 - 2² = 42839011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42839011) 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, 1784 + ... + 9426.

It is an arithmetic number, because the mean of its divisors is an integer number (3439800).

Almost surely, 2^42839015 is an apocalyptic number.

42839015 is a deficient number, since it is larger than the sum of its proper divisors (12197785).

42839015 is a wasteful number, since it uses less digits than its factorization.

42839015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 42839015 is about 6545.1520226806. The cubic root of 42839015 is about 349.9020542256.

The spelling of 42839015 in words is "forty-two million, eight hundred thirty-nine thousand, fifteen".