42185151 has 16 divisors (see below), whose sum is σ = 65214720. Its totient is φ = 26900280.

The previous prime is 42185123. The next prime is 42185153. The reversal of 42185151 is 15158124.

It is not a de Polignac number, because 42185151 - 2⁵ = 42185119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42185153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33345 + ... + 34586.

It is an arithmetic number, because the mean of its divisors is an integer number (4075920).

Almost surely, 2^42185151 is an apocalyptic number.

42185151 is a deficient number, since it is larger than the sum of its proper divisors (23029569).

42185151 is a wasteful number, since it uses less digits than its factorization.

42185151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67963 (or 67957 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 42185151 is about 6495.0096997618. The cubic root of 42185151 is about 348.1127013094.

It can be divided in two parts, 42 and 185151, that added together give a cube (185193 = 57³).

The spelling of 42185151 in words is "forty-two million, one hundred eighty-five thousand, one hundred fifty-one".