142971778492842 has 32 divisors (see below), whose sum is σ = 326053286701632. Its totient is φ = 41403591961344.

The previous prime is 142971778492841. The next prime is 142971778492897. The reversal of 142971778492842 is 248294877179241.

It is not an unprimeable number, because it can be changed into a prime (142971778492841) 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, 53910925708 + ... + 53910928359.

It is an arithmetic number, because the mean of its divisors is an integer number (10189165209426).

Almost surely, 2^{142971778492842} is an apocalyptic number.

142971778492842 is an abundant number, since it is smaller than the sum of its proper divisors (183081508208790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142971778492842 is a wasteful number, since it uses less digits than its factorization.

142971778492842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107821854102.

The product of its digits is 910393344, while the sum is 75.

The spelling of 142971778492842 in words is "one hundred forty-two trillion, nine hundred seventy-one billion, seven hundred seventy-eight million, four hundred ninety-two thousand, eight hundred forty-two".