56821313142 has 96 divisors (see below), whose sum is σ = 138990069504. Its totient is φ = 16625044800.

The previous prime is 56821313117. The next prime is 56821313149. The reversal of 56821313142 is 24131312865.

56821313142 is a `hidden beast` number, since 568 + 21 + 3 + 1 + 31 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 56821313097 and 56821313106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56821313149) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 930103 + ... + 989309.

It is an arithmetic number, because the mean of its divisors is an integer number (1447813224).

Almost surely, 2^56821313142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56821313142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69495034752).

56821313142 is an abundant number, since it is smaller than the sum of its proper divisors (82168756362).

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

56821313142 is a wasteful number, since it uses less digits than its factorization.

56821313142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59394 (or 59391 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

It can be divided in two parts, 56821 and 313142, that added together give a palindrome (369963).

The spelling of 56821313142 in words is "fifty-six billion, eight hundred twenty-one million, three hundred thirteen thousand, one hundred forty-two".