42322540 has 24 divisors (see below), whose sum is σ = 95714640. Its totient is φ = 15626688.

The previous prime is 42322477. The next prime is 42322559. The reversal of 42322540 is 4522324.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81130 + ... + 81649.

It is an arithmetic number, because the mean of its divisors is an integer number (3988110).

Almost surely, 2^42322540 is an apocalyptic number.

It is an amenable number.

42322540 is an abundant number, since it is smaller than the sum of its proper divisors (53392100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42322540 is a wasteful number, since it uses less digits than its factorization.

42322540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162801 (or 162799 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42322540 is about 6505.5776069462. The cubic root of 42322540 is about 348.4902040368.

Adding to 42322540 its reverse (4522324), we get a palindrome (46844864).

The spelling of 42322540 in words is "forty-two million, three hundred twenty-two thousand, five hundred forty".