42164155 has 16 divisors (see below), whose sum is σ = 55443168. Its totient is φ = 30528000.

The previous prime is 42164149. The next prime is 42164189. The reversal of 42164155 is 55146124.

It is not a de Polignac number, because 42164155 - 2³ = 42164147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11665 + ... + 14845.

It is an arithmetic number, because the mean of its divisors is an integer number (3465198).

Almost surely, 2^42164155 is an apocalyptic number.

42164155 is the 5302-nd pentagonal number.

42164155 is a deficient number, since it is larger than the sum of its proper divisors (13279013).

42164155 is a wasteful number, since it uses less digits than its factorization.

42164155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438.

The product of its digits is 4800, while the sum is 28.

The square root of 42164155 is about 6493.3931807646. The cubic root of 42164155 is about 348.0549385894.

The spelling of 42164155 in words is "forty-two million, one hundred sixty-four thousand, one hundred fifty-five".