42155604 has 36 divisors (see below), whose sum is σ = 112170240. Its totient is φ = 13312080.

The previous prime is 42155579. The next prime is 42155621. The reversal of 42155604 is 40655124.

42155604 is a `hidden beast` number, since 4 + 2 + 1 + 55 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30132 + ... + 31499.

It is an arithmetic number, because the mean of its divisors is an integer number (3115840).

Almost surely, 2^42155604 is an apocalyptic number.

It is an amenable number.

42155604 is an abundant number, since it is smaller than the sum of its proper divisors (70014636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42155604 is a wasteful number, since it uses less digits than its factorization.

42155604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61660 (or 61655 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 42155604 is about 6492.7347088881. The cubic root of 42155604 is about 348.0314081838.

The spelling of 42155604 in words is "forty-two million, one hundred fifty-five thousand, six hundred four".