142978681279 has 6 divisors (see below), whose sum is σ = 166322139504. Its totient is φ = 122553155340.

The previous prime is 142978681277. The next prime is 142978681283. The reversal of 142978681279 is 972186879241.

It is not a de Polignac number, because 142978681279 - 2¹ = 142978681277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142978681279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142978681277) 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, 1458966087 + ... + 1458966184.

It is an arithmetic number, because the mean of its divisors is an integer number (27720356584).

Almost surely, 2^142978681279 is an apocalyptic number.

142978681279 is a deficient number, since it is larger than the sum of its proper divisors (23343458225).

142978681279 is an equidigital number, since it uses as much as digits as its factorization.

142978681279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917932285 (or 2917932278 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 64.

The spelling of 142978681279 in words is "one hundred forty-two billion, nine hundred seventy-eight million, six hundred eighty-one thousand, two hundred seventy-nine".