142321012402251 has 16 divisors (see below), whose sum is σ = 196308423129600. Its totient is φ = 91607257586208.

The previous prime is 142321012402249. The next prime is 142321012402259. The reversal of 142321012402251 is 152204210123241.

It is not a de Polignac number, because 142321012402251 - 2¹ = 142321012402249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142321012402259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10101241 + ... + 19664106.

It is an arithmetic number, because the mean of its divisors is an integer number (12269276445600).

Almost surely, 2^{142321012402251} is an apocalyptic number.

142321012402251 is a deficient number, since it is larger than the sum of its proper divisors (53987410727349).

142321012402251 is a wasteful number, since it uses less digits than its factorization.

142321012402251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29820338.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 142321012402251 its reverse (152204210123241), we get a palindrome (294525222525492).

The spelling of 142321012402251 in words is "one hundred forty-two trillion, three hundred twenty-one billion, twelve million, four hundred two thousand, two hundred fifty-one".