42164051 has 4 divisors (see below), whose sum is σ = 42231504. Its totient is φ = 42096600.

The previous prime is 42164047. The next prime is 42164081. The reversal of 42164051 is 15046124.

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 42164051 - 2² = 42164047 is a prime.

It is a super-3 number, since 3×42164051³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42164081) 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, 32780 + ... + 34041.

It is an arithmetic number, because the mean of its divisors is an integer number (10557876).

Almost surely, 2^42164051 is an apocalyptic number.

42164051 is a deficient number, since it is larger than the sum of its proper divisors (67453).

42164051 is an equidigital number, since it uses as much as digits as its factorization.

42164051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67452.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 42164051 is about 6493.3851726199. The cubic root of 42164051 is about 348.0546524242.

The spelling of 42164051 in words is "forty-two million, one hundred sixty-four thousand, fifty-one".