142521043145643 has 6 divisors (see below), whose sum is σ = 205863728988164. Its totient is φ = 95014028763756.

The previous prime is 142521043145627. The next prime is 142521043145683. The reversal of 142521043145643 is 346541340125241.

142521043145643 is a `hidden beast` number, since 1 + 4 + 2 + 52 + 1 + 0 + 4 + 31 + 4 + 564 + 3 = 666.

It is not a de Polignac number, because 142521043145643 - 2⁴ = 142521043145627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142521043145683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7917835730305 + ... + 7917835730322.

Almost surely, 2^{142521043145643} is an apocalyptic number.

142521043145643 is a deficient number, since it is larger than the sum of its proper divisors (63342685842521).

142521043145643 is a wasteful number, since it uses less digits than its factorization.

142521043145643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15835671460633 (or 15835671460630 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 142521043145643 in words is "one hundred forty-two trillion, five hundred twenty-one billion, forty-three million, one hundred forty-five thousand, six hundred forty-three".