142185279879 has 32 divisors (see below), whose sum is σ = 211333140480. Its totient is φ = 94480927200.

The previous prime is 142185279811. The next prime is 142185279889. The reversal of 142185279879 is 978972581241.

142185279879 is a `hidden beast` number, since 1 + 4 + 2 + 18 + 527 + 98 + 7 + 9 = 666.

It is not a de Polignac number, because 142185279879 - 2²⁵ = 142151725447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142185279889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12329214 + ... + 12340740.

It is an arithmetic number, because the mean of its divisors is an integer number (6604160640).

Almost surely, 2^142185279879 is an apocalyptic number.

142185279879 is a deficient number, since it is larger than the sum of its proper divisors (69147860601).

142185279879 is a wasteful number, since it uses less digits than its factorization.

142185279879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12988 (or 12982 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 63.

The spelling of 142185279879 in words is "one hundred forty-two billion, one hundred eighty-five million, two hundred seventy-nine thousand, eight hundred seventy-nine".