42618951 has 24 divisors (see below), whose sum is σ = 64019280. Its totient is φ = 27288576.

The previous prime is 42618941. The next prime is 42618971. The reversal of 42618951 is 15981624.

42618951 is a `hidden beast` number, since 426 + 189 + 51 = 666.

It is not a de Polignac number, because 42618951 - 2¹³ = 42610759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42618911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73575 + ... + 74151.

It is an arithmetic number, because the mean of its divisors is an integer number (2667470).

Almost surely, 2^42618951 is an apocalyptic number.

42618951 is a deficient number, since it is larger than the sum of its proper divisors (21400329).

42618951 is a wasteful number, since it uses less digits than its factorization.

42618951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 892 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 42618951 is about 6528.3191558011. The cubic root of 42618951 is about 349.3018764488.

The spelling of 42618951 in words is "forty-two million, six hundred eighteen thousand, nine hundred fifty-one".