42512315 has 16 divisors (see below), whose sum is σ = 53415936. Its totient is φ = 32440800.

The previous prime is 42512311. The next prime is 42512317. The reversal of 42512315 is 51321524.

It is not a de Polignac number, because 42512315 - 2² = 42512311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42512311) 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, 9074 + ... + 12936.

It is an arithmetic number, because the mean of its divisors is an integer number (3338496).

Almost surely, 2^42512315 is an apocalyptic number.

42512315 is a deficient number, since it is larger than the sum of its proper divisors (10903621).

42512315 is a wasteful number, since it uses less digits than its factorization.

42512315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970.

The product of its digits is 1200, while the sum is 23.

The square root of 42512315 is about 6520.1468541744. The cubic root of 42512315 is about 349.0103061244.

Adding to 42512315 its reverse (51321524), we get a palindrome (93833839).

The spelling of 42512315 in words is "forty-two million, five hundred twelve thousand, three hundred fifteen".