42356145 has 32 divisors (see below), whose sum is σ = 73890432. Its totient is φ = 20593152.

The previous prime is 42356123. The next prime is 42356173. The reversal of 42356145 is 54165324.

It is not a de Polignac number, because 42356145 - 2⁵ = 42356113 is a prime.

It is a super-2 number, since 2×42356145² = 3588086038522050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14877 + ... + 17493.

It is an arithmetic number, because the mean of its divisors is an integer number (2309076).

Almost surely, 2^42356145 is an apocalyptic number.

It is an amenable number.

42356145 is a deficient number, since it is larger than the sum of its proper divisors (31534287).

42356145 is a wasteful number, since it uses less digits than its factorization.

42356145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721.

The product of its digits is 14400, while the sum is 30.

The square root of 42356145 is about 6508.1598781837. The cubic root of 42356145 is about 348.5824158548.

The spelling of 42356145 in words is "forty-two million, three hundred fifty-six thousand, one hundred forty-five".