142321013420561 has 8 divisors (see below), whose sum is σ = 144035995672800. Its totient is φ = 140606037626752.

The previous prime is 142321013420539. The next prime is 142321013420563. The reversal of 142321013420561 is 165024310123241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142321013420561 - 2¹⁰ = 142321013419537 is a prime.

It is a super-2 number, since 2×142321013420561² (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 (142321013420563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54334526 + ... + 56893608.

It is an arithmetic number, because the mean of its divisors is an integer number (18004499459100).

Almost surely, 2^{142321013420561} is an apocalyptic number.

It is an amenable number.

142321013420561 is a deficient number, since it is larger than the sum of its proper divisors (1714982252239).

142321013420561 is an equidigital number, since it uses as much as digits as its factorization.

142321013420561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229215.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 142321013420561 in words is "one hundred forty-two trillion, three hundred twenty-one billion, thirteen million, four hundred twenty thousand, five hundred sixty-one".