142042254139 has 4 divisors (see below), whose sum is σ = 142043090256. Its totient is φ = 142041418024.

The previous prime is 142042254113. The next prime is 142042254149. The reversal of 142042254139 is 931452240241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 142042254139 - 2²³ = 142033865531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142042254098 and 142042254107.

It is not an unprimeable number, because it can be changed into a prime (142042254149) 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, 62344 + ... + 536629.

It is an arithmetic number, because the mean of its divisors is an integer number (35510772564).

Almost surely, 2^142042254139 is an apocalyptic number.

142042254139 is a deficient number, since it is larger than the sum of its proper divisors (836117).

142042254139 is an equidigital number, since it uses as much as digits as its factorization.

142042254139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836116.

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

The spelling of 142042254139 in words is "one hundred forty-two billion, forty-two million, two hundred fifty-four thousand, one hundred thirty-nine".