142321400445253 has 4 divisors (see below), whose sum is σ = 142330310584588. Its totient is φ = 142312490305920.

The previous prime is 142321400445229. The next prime is 142321400445299. The reversal of 142321400445253 is 352544004123241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130168772177409 + 12152628267844 = 11409153^2 + 3486062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142321400445253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321400440253) 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, 4455045708 + ... + 4455077653.

It is an arithmetic number, because the mean of its divisors is an integer number (35582577646147).

Almost surely, 2^{142321400445253} is an apocalyptic number.

It is an amenable number.

142321400445253 is a deficient number, since it is larger than the sum of its proper divisors (8910139335).

142321400445253 is an equidigital number, since it uses as much as digits as its factorization.

142321400445253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8910139334.

The product of its (nonzero) digits is 460800, while the sum is 40.

Adding to 142321400445253 its reverse (352544004123241), we get a palindrome (494865404568494).

The spelling of 142321400445253 in words is "one hundred forty-two trillion, three hundred twenty-one billion, four hundred million, four hundred forty-five thousand, two hundred fifty-three".