42164140 has 24 divisors (see below), whose sum is σ = 88672752. Its totient is φ = 16841280.

The previous prime is 42164137. The next prime is 42164147. The reversal of 42164140 is 4146124.

It is not an unprimeable number, because it can be changed into a prime (42164147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20227 + ... + 22213.

It is an arithmetic number, because the mean of its divisors is an integer number (3694698).

Almost surely, 2^42164140 is an apocalyptic number.

It is an amenable number.

42164140 is an abundant number, since it is smaller than the sum of its proper divisors (46508612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42164140 is a wasteful number, since it uses less digits than its factorization.

42164140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057 (or 3055 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 42164140 is about 6493.3920257443. The cubic root of 42164140 is about 348.0548973156.

The spelling of 42164140 in words is "forty-two million, one hundred sixty-four thousand, one hundred forty".