142321011510644 has 12 divisors (see below), whose sum is σ = 255793169336964. Its totient is φ = 69237248842944.

The previous prime is 142321011510589. The next prime is 142321011510647. The reversal of 142321011510644 is 446015110123241.

It can be written as a sum of positive squares in 2 ways, for example, as 88988809158544 + 53332202352100 = 9433388^2 + 7302890^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321011510647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480814227929 + ... + 480814228224.

It is an arithmetic number, because the mean of its divisors is an integer number (21316097444747).

Almost surely, 2^{142321011510644} is an apocalyptic number.

It is an amenable number.

142321011510644 is a deficient number, since it is larger than the sum of its proper divisors (113472157826320).

142321011510644 is a wasteful number, since it uses less digits than its factorization.

142321011510644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961628456194 (or 961628456192 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

Adding to 142321011510644 its reverse (446015110123241), we get a palindrome (588336121633885).

The spelling of 142321011510644 in words is "one hundred forty-two trillion, three hundred twenty-one billion, eleven million, five hundred ten thousand, six hundred forty-four".