531412400442 has 128 divisors (see below), whose sum is σ = 1349129779200. Its totient is φ = 135529574400.

The previous prime is 531412400437. The next prime is 531412400443. The reversal of 531412400442 is 244004214135.

It is not an unprimeable number, because it can be changed into a prime (531412400443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24003234 + ... + 24025362.

It is an arithmetic number, because the mean of its divisors is an integer number (10540076400).

Almost surely, 2^531412400442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531412400442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674564889600).

531412400442 is an abundant number, since it is smaller than the sum of its proper divisors (817717378758).

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

531412400442 is a wasteful number, since it uses less digits than its factorization.

531412400442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23092.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 531412400442 its reverse (244004214135), we get a palindrome (775416614577).

The spelling of 531412400442 in words is "five hundred thirty-one billion, four hundred twelve million, four hundred thousand, four hundred forty-two".