531542120 has 32 divisors (see below), whose sum is σ = 1234552320. Its totient is φ = 205757760.

The previous prime is 531542101. The next prime is 531542149. The reversal of 531542120 is 21245135.

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, 213092 + ... + 215571.

It is an arithmetic number, because the mean of its divisors is an integer number (38579760).

Almost surely, 2^531542120 is an apocalyptic number.

It is an amenable number.

531542120 is an abundant number, since it is smaller than the sum of its proper divisors (703010200).

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

531542120 is a wasteful number, since it uses less digits than its factorization.

531542120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428705 (or 428701 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 531542120 is about 23055.1972448730. The cubic root of 531542120 is about 810.0513710243.

Adding to 531542120 its reverse (21245135), we get a palindrome (552787255).

The spelling of 531542120 in words is "five hundred thirty-one million, five hundred forty-two thousand, one hundred twenty".