42581132 has 12 divisors (see below), whose sum is σ = 81291336. Its totient is φ = 19355040.

The previous prime is 42581129. The next prime is 42581153. The reversal of 42581132 is 23118524.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483833 + ... + 483920.

It is an arithmetic number, because the mean of its divisors is an integer number (6774278).

Almost surely, 2^42581132 is an apocalyptic number.

It is an amenable number.

42581132 is a deficient number, since it is larger than the sum of its proper divisors (38710204).

42581132 is a wasteful number, since it uses less digits than its factorization.

42581132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967768 (or 967766 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 42581132 is about 6525.4219786923. The cubic root of 42581132 is about 349.1985252653.

Adding to 42581132 its reverse (23118524), we get a palindrome (65699656).

The spelling of 42581132 in words is "forty-two million, five hundred eighty-one thousand, one hundred thirty-two".