742879978247 has 16 divisors (see below), whose sum is σ = 845689075200. Its totient is φ = 645952692000.

The previous prime is 742879978231. The next prime is 742879978259.

742879978247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 742879978247 - 2⁴ = 742879978231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742879978297) 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, 6764129 + ... + 6873077.

It is an arithmetic number, because the mean of its divisors is an integer number (52855567200).

Almost surely, 2^742879978247 is an apocalyptic number.

742879978247 is a deficient number, since it is larger than the sum of its proper divisors (102809096953).

742879978247 is a wasteful number, since it uses less digits than its factorization.

742879978247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135934.

The product of its digits is 796594176, while the sum is 74.

The spelling of 742879978247 in words is "seven hundred forty-two billion, eight hundred seventy-nine million, nine hundred seventy-eight thousand, two hundred forty-seven".