42538747 has 2 divisors, whose sum is σ = 42538748. Its totient is φ = 42538746.

The previous prime is 42538729. The next prime is 42538751. The reversal of 42538747 is 74783524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42538747 - 2¹⁵ = 42505979 is a prime.

It is not a weakly prime, because it can be changed into another prime (42538757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21269373 + 21269374.

It is an arithmetic number, because the mean of its divisors is an integer number (21269374).

Almost surely, 2^42538747 is an apocalyptic number.

42538747 is a deficient number, since it is larger than the sum of its proper divisors (1).

42538747 is an equidigital number, since it uses as much as digits as its factorization.

42538747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 40.

The square root of 42538747 is about 6522.1734874197. The cubic root of 42538747 is about 349.0826234376.

The spelling of 42538747 in words is "forty-two million, five hundred thirty-eight thousand, seven hundred forty-seven".