142321400442531 has 20 divisors (see below), whose sum is σ = 219461753294784. Its totient is φ = 91820258348400.

The previous prime is 142321400442527. The next prime is 142321400442547. The reversal of 142321400442531 is 135244004123241.

142321400442531 is a `hidden beast` number, since 1 + 4 + 2 + 321 + 40 + 0 + 44 + 253 + 1 = 666.

It is not a de Polignac number, because 142321400442531 - 2² = 142321400442527 is a prime.

It is a super-2 number, since 2×142321400442531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142321400442131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28339583400 + ... + 28339588421.

Almost surely, 2^{142321400442531} is an apocalyptic number.

142321400442531 is a deficient number, since it is larger than the sum of its proper divisors (77140352852253).

142321400442531 is an equidigital number, since it uses as much as digits as its factorization.

142321400442531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56679171864 (or 56679171855 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 142321400442531 its reverse (135244004123241), we get a palindrome (277565404565772).

The spelling of 142321400442531 in words is "one hundred forty-two trillion, three hundred twenty-one billion, four hundred million, four hundred forty-two thousand, five hundred thirty-one".