531102042 has 64 divisors (see below), whose sum is σ = 1198512000. Its totient is φ = 174317184.

The previous prime is 531102037. The next prime is 531102053. The reversal of 531102042 is 240201135.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1298334 + ... + 1298742.

It is an arithmetic number, because the mean of its divisors is an integer number (18726750).

Almost surely, 2^531102042 is an apocalyptic number.

531102042 is an abundant number, since it is smaller than the sum of its proper divisors (667409958).

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

531102042 is a wasteful number, since it uses less digits than its factorization.

531102042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 531102042 is about 23045.6512600534. The cubic root of 531102042 is about 809.8277548702.

Adding to 531102042 its reverse (240201135), we get a palindrome (771303177).

The spelling of 531102042 in words is "five hundred thirty-one million, one hundred two thousand, forty-two".