42155452 has 12 divisors (see below), whose sum is σ = 77654920. Its totient is φ = 19968336.

The previous prime is 42155447. The next prime is 42155459. The reversal of 42155452 is 25455124.

It is a self number, because there is not a number n which added to its sum of digits gives 42155452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42155459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277263 + ... + 277414.

Almost surely, 2^42155452 is an apocalyptic number.

It is an amenable number.

42155452 is a deficient number, since it is larger than the sum of its proper divisors (35499468).

42155452 is a wasteful number, since it uses less digits than its factorization.

42155452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554700 (or 554698 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 42155452 is about 6492.7230034863. The cubic root of 42155452 is about 348.0309898857.

The spelling of 42155452 in words is "forty-two million, one hundred fifty-five thousand, four hundred fifty-two".