42615404 has 24 divisors (see below), whose sum is σ = 84542640. Its totient is φ = 18633024.

The previous prime is 42615401. The next prime is 42615431. The reversal of 42615404 is 40451624.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (42615401) 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, 20579 + ... + 22554.

It is an arithmetic number, because the mean of its divisors is an integer number (3522610).

Almost surely, 2^42615404 is an apocalyptic number.

It is an amenable number.

42615404 is a deficient number, since it is larger than the sum of its proper divisors (41927236).

42615404 is a wasteful number, since it uses less digits than its factorization.

42615404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43169 (or 43167 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 42615404 is about 6528.0474875724. The cubic root of 42615404 is about 349.2921858605.

The spelling of 42615404 in words is "forty-two million, six hundred fifteen thousand, four hundred four".