42538597 has 2 divisors, whose sum is σ = 42538598. Its totient is φ = 42538596.

The previous prime is 42538589. The next prime is 42538627. The reversal of 42538597 is 79583524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37933281 + 4605316 = 6159^2 + 2146^2 .

It is a cyclic number.

It is not a de Polignac number, because 42538597 - 2³ = 42538589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42538537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21269298 + 21269299.

It is an arithmetic number, because the mean of its divisors is an integer number (21269299).

Almost surely, 2^42538597 is an apocalyptic number.

It is an amenable number.

42538597 is a deficient number, since it is larger than the sum of its proper divisors (1).

42538597 is an equidigital number, since it uses as much as digits as its factorization.

42538597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The square root of 42538597 is about 6522.1619881754. The cubic root of 42538597 is about 349.0822131257.

The spelling of 42538597 in words is "forty-two million, five hundred thirty-eight thousand, five hundred ninety-seven".