42538627 has 2 divisors, whose sum is σ = 42538628. Its totient is φ = 42538626.

The previous prime is 42538597. The next prime is 42538631. The reversal of 42538627 is 72683524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42538627 is a prime.

It is not a weakly prime, because it can be changed into another prime (42538687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21269313 + 21269314.

It is an arithmetic number, because the mean of its divisors is an integer number (21269314).

Almost surely, 2^42538627 is an apocalyptic number.

42538627 is a deficient number, since it is larger than the sum of its proper divisors (1).

42538627 is an equidigital number, since it uses as much as digits as its factorization.

42538627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 37.

The square root of 42538627 is about 6522.1642880259. The cubic root of 42538627 is about 349.0822951882.

It can be divided in two parts, 4253 and 8627, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 42538627 in words is "forty-two million, five hundred thirty-eight thousand, six hundred twenty-seven".