42915215 has 16 divisors (see below), whose sum is σ = 60886080. Its totient is φ = 28412160.

The previous prime is 42915211. The next prime is 42915251. The reversal of 42915215 is 51251924.

It is not a de Polignac number, because 42915215 - 2² = 42915211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42915211) 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, 20126 + ... + 22155.

It is an arithmetic number, because the mean of its divisors is an integer number (3805380).

Almost surely, 2^42915215 is an apocalyptic number.

42915215 is a deficient number, since it is larger than the sum of its proper divisors (17970865).

42915215 is a wasteful number, since it uses less digits than its factorization.

42915215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42322.

The product of its digits is 3600, while the sum is 29.

The square root of 42915215 is about 6550.9705387828. The cubic root of 42915215 is about 350.1093943761.

The spelling of 42915215 in words is "forty-two million, nine hundred fifteen thousand, two hundred fifteen".