142321355220001 has 4 divisors (see below), whose sum is σ = 142558162800004. Its totient is φ = 142084547640000.

The previous prime is 142321355219891. The next prime is 142321355220017. The reversal of 142321355220001 is 100022553123241.

It is a happy number.

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 105219916920976 + 37101438299025 = 10257676^2 + 6091095^2 .

It is a cyclic number.

It is not a de Polignac number, because 142321355220001 - 2⁴⁷ = 1583866864673 is a prime.

It is a super-2 number, since 2×142321355220001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142321355220071) 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, 118403789100 + ... + 118403790301.

It is an arithmetic number, because the mean of its divisors is an integer number (35639540700001).

Almost surely, 2^{142321355220001} is an apocalyptic number.

It is an amenable number.

142321355220001 is a deficient number, since it is larger than the sum of its proper divisors (236807580003).

142321355220001 is an equidigital number, since it uses as much as digits as its factorization.

142321355220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236807580002.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 142321355220001 in words is "one hundred forty-two trillion, three hundred twenty-one billion, three hundred fifty-five million, two hundred twenty thousand, one".