142521043145639 has 8 divisors (see below), whose sum is σ = 150078191880240. Its totient is φ = 134969498531136.

The previous prime is 142521043145627. The next prime is 142521043145683. The reversal of 142521043145639 is 936541340125241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142521043145639 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 (142521043145699) 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, 1400977814 + ... + 1401079539.

It is an arithmetic number, because the mean of its divisors is an integer number (18759773985030).

Almost surely, 2^{142521043145639} is an apocalyptic number.

142521043145639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

142521043145639 is a deficient number, since it is larger than the sum of its proper divisors (7557148734601).

142521043145639 is a wasteful number, since it uses less digits than its factorization.

142521043145639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802060049.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 142521043145639 in words is "one hundred forty-two trillion, five hundred twenty-one billion, forty-three million, one hundred forty-five thousand, six hundred thirty-nine".