42164028 has 36 divisors (see below), whose sum is σ = 110259240. Its totient is φ = 13569696.

The previous prime is 42163981. The next prime is 42164039. The reversal of 42164028 is 82046124.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 42163992 and 42164010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19150 + ... + 21237.

Almost surely, 2^42164028 is an apocalyptic number.

It is an amenable number.

42164028 is an abundant number, since it is smaller than the sum of its proper divisors (68095212).

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

42164028 is a wasteful number, since it uses less digits than its factorization.

42164028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40426 (or 40421 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 42164028 is about 6493.3834015866. The cubic root of 42164028 is about 348.0545891376.

The spelling of 42164028 in words is "forty-two million, one hundred sixty-four thousand, twenty-eight".