42555015 has 24 divisors (see below), whose sum is σ = 74010768. Its totient is φ = 22619520.

The previous prime is 42555011. The next prime is 42555043. The reversal of 42555015 is 51055524.

It is not a de Polignac number, because 42555015 - 2² = 42555011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42555015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13467 + ... + 16323.

It is an arithmetic number, because the mean of its divisors is an integer number (3083782).

Almost surely, 2^42555015 is an apocalyptic number.

42555015 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42555015 is a deficient number, since it is larger than the sum of its proper divisors (31455753).

42555015 is a wasteful number, since it uses less digits than its factorization.

42555015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199 (or 3196 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 42555015 is about 6523.4204984808. The cubic root of 42555015 is about 349.1271174009.

The spelling of 42555015 in words is "forty-two million, five hundred fifty-five thousand, fifteen".