42538761 has 12 divisors (see below), whose sum is σ = 61501440. Its totient is φ = 28333080.

The previous prime is 42538759. The next prime is 42538817. The reversal of 42538761 is 16783524.

It is not a de Polignac number, because 42538761 - 2¹ = 42538759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42538751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17880 + ... + 20118.

It is an arithmetic number, because the mean of its divisors is an integer number (5125120).

Almost surely, 2^42538761 is an apocalyptic number.

It is an amenable number.

42538761 is a deficient number, since it is larger than the sum of its proper divisors (18962679).

42538761 is a wasteful number, since it uses less digits than its factorization.

42538761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356 (or 4353 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 42538761 is about 6522.1745606814. The cubic root of 42538761 is about 349.0826617333.

The spelling of 42538761 in words is "forty-two million, five hundred thirty-eight thousand, seven hundred sixty-one".