42055051 has 4 divisors (see below), whose sum is σ = 43191712. Its totient is φ = 40918392.

The previous prime is 42055033. The next prime is 42055099. The reversal of 42055051 is 15055024.

42055051 = 320² + 321² + ... + 541².

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42055051 - 2⁵ = 42055019 is a prime.

It is a super-2 number, since 2×42055051² = 3537254629225202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42055451) 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, 568275 + ... + 568348.

It is an arithmetic number, because the mean of its divisors is an integer number (10797928).

Almost surely, 2^42055051 is an apocalyptic number.

42055051 is a deficient number, since it is larger than the sum of its proper divisors (1136661).

42055051 is a wasteful number, since it uses less digits than its factorization.

42055051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136660.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 42055051 is about 6484.9865844117. The cubic root of 42055051 is about 347.7544702002.

The spelling of 42055051 in words is "forty-two million, fifty-five thousand, fifty-one".