42164925 has 24 divisors (see below), whose sum is σ = 76051680. Its totient is φ = 20443200.

The previous prime is 42164923. The next prime is 42164951. The reversal of 42164925 is 52946124.

42164925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42164925 - 2¹ = 42164923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42164921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24730 + ... + 26379.

It is an arithmetic number, because the mean of its divisors is an integer number (3168820).

Almost surely, 2^42164925 is an apocalyptic number.

It is an amenable number.

42164925 is a deficient number, since it is larger than the sum of its proper divisors (33886755).

42164925 is a wasteful number, since it uses less digits than its factorization.

42164925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51133 (or 51128 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 42164925 is about 6493.4524715285. The cubic root of 42164925 is about 348.0570572980.

The spelling of 42164925 in words is "forty-two million, one hundred sixty-four thousand, nine hundred twenty-five".