642142131132 has 48 divisors (see below), whose sum is σ = 1551345868800. Its totient is φ = 206486750400.

The previous prime is 642142131067. The next prime is 642142131167. The reversal of 642142131132 is 231131241246.

642142131132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 642142131132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401032 + ... + 1202127.

It is an arithmetic number, because the mean of its divisors is an integer number (32319705600).

Almost surely, 2^642142131132 is an apocalyptic number.

It is an amenable number.

642142131132 is an abundant number, since it is smaller than the sum of its proper divisors (909203737668).

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

642142131132 is a wasteful number, since it uses less digits than its factorization.

642142131132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604346 (or 1604344 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

Adding to 642142131132 its reverse (231131241246), we get a palindrome (873273372378).

The spelling of 642142131132 in words is "six hundred forty-two billion, one hundred forty-two million, one hundred thirty-one thousand, one hundred thirty-two".