42624157 has 2 divisors, whose sum is σ = 42624158. Its totient is φ = 42624156.

The previous prime is 42624143. The next prime is 42624161. The reversal of 42624157 is 75142624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21335161 + 21288996 = 4619^2 + 4614^2 .

It is a cyclic number.

It is not a de Polignac number, because 42624157 - 2¹¹ = 42622109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42624107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21312078 + 21312079.

It is an arithmetic number, because the mean of its divisors is an integer number (21312079).

Almost surely, 2^42624157 is an apocalyptic number.

It is an amenable number.

42624157 is a deficient number, since it is larger than the sum of its proper divisors (1).

42624157 is an equidigital number, since it uses as much as digits as its factorization.

42624157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 42624157 is about 6528.7178680044. The cubic root of 42624157 is about 349.3160985377.

The spelling of 42624157 in words is "forty-two million, six hundred twenty-four thousand, one hundred fifty-seven".