42185267 has 4 divisors (see below), whose sum is σ = 42205176. Its totient is φ = 42165360.

The previous prime is 42185237. The next prime is 42185287. The reversal of 42185267 is 76258124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42185267 is a prime.

It is a super-2 number, since 2×42185267² = 3559193503722578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42185237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6338 + ... + 11159.

It is an arithmetic number, because the mean of its divisors is an integer number (10551294).

Almost surely, 2^42185267 is an apocalyptic number.

42185267 is a deficient number, since it is larger than the sum of its proper divisors (19909).

42185267 is a wasteful number, since it uses less digits than its factorization.

42185267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19908.

The product of its digits is 26880, while the sum is 35.

The square root of 42185267 is about 6495.0186296884. The cubic root of 42185267 is about 348.1130203872.

The spelling of 42185267 in words is "forty-two million, one hundred eighty-five thousand, two hundred sixty-seven".