142312779 has 24 divisors (see below), whose sum is σ = 238917120. Its totient is φ = 79941168.

The previous prime is 142312759. The next prime is 142312813. The reversal of 142312779 is 977213241.

142312779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142312779 - 2⁵ = 142312747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142312739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15427 + ... + 22860.

It is an arithmetic number, because the mean of its divisors is an integer number (9954880).

Almost surely, 2^142312779 is an apocalyptic number.

142312779 is a deficient number, since it is larger than the sum of its proper divisors (96604341).

142312779 is a wasteful number, since it uses less digits than its factorization.

142312779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38359 (or 38356 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 142312779 is about 11929.4919841542. The cubic root of 142312779 is about 522.0931154627.

The spelling of 142312779 in words is "one hundred forty-two million, three hundred twelve thousand, seven hundred seventy-nine".