142321205040661 has 16 divisors (see below), whose sum is σ = 146460594931200. Its totient is φ = 138197349065088.

The previous prime is 142321205040631. The next prime is 142321205040733. The reversal of 142321205040661 is 166040502123241.

142321205040661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 142321205040661 - 2¹⁵ = 142321205007893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 142321205040661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321205040631) 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, 85046536 + ... + 86703838.

It is an arithmetic number, because the mean of its divisors is an integer number (9153787183200).

Almost surely, 2^{142321205040661} is an apocalyptic number.

It is an amenable number.

142321205040661 is a deficient number, since it is larger than the sum of its proper divisors (4139389890539).

142321205040661 is a wasteful number, since it uses less digits than its factorization.

142321205040661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661988.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 142321205040661 in words is "one hundred forty-two trillion, three hundred twenty-one billion, two hundred five million, forty thousand, six hundred sixty-one".