42531332 has 12 divisors (see below), whose sum is σ = 75541200. Its totient is φ = 20948136.

The previous prime is 42531319. The next prime is 42531337. The reversal of 42531332 is 23313524.

It is a junction number, because it is equal to n+sod(n) for n = 42531298 and 42531307.

It is not an unprimeable number, because it can be changed into a prime (42531337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79082 + ... + 79617.

It is an arithmetic number, because the mean of its divisors is an integer number (6295100).

Almost surely, 2^42531332 is an apocalyptic number.

It is an amenable number.

42531332 is a deficient number, since it is larger than the sum of its proper divisors (33009868).

42531332 is a wasteful number, since it uses less digits than its factorization.

42531332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158770 (or 158768 counting only the distinct ones).

The product of its digits is 2160, while the sum is 23.

The square root of 42531332 is about 6521.6050171718. The cubic root of 42531332 is about 349.0623392006.

Adding to 42531332 its reverse (23313524), we get a palindrome (65844856).

The spelling of 42531332 in words is "forty-two million, five hundred thirty-one thousand, three hundred thirty-two".