42185465 has 16 divisors (see below), whose sum is σ = 58805760. Its totient is φ = 28451520.

The previous prime is 42185419. The next prime is 42185471. The reversal of 42185465 is 56458124.

It is a de Polignac number, because none of the positive numbers 2^k-42185465 is a prime.

It is a super-2 number, since 2×42185465² = 3559226914532450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7745 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (3675360).

Almost surely, 2^42185465 is an apocalyptic number.

It is an amenable number.

42185465 is a deficient number, since it is larger than the sum of its proper divisors (16620295).

42185465 is a wasteful number, since it uses less digits than its factorization.

42185465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19832.

The product of its digits is 38400, while the sum is 35.

The square root of 42185465 is about 6495.0338721211. The cubic root of 42185465 is about 348.1135650186.

The spelling of 42185465 in words is "forty-two million, one hundred eighty-five thousand, four hundred sixty-five".