742178879 has 6 divisors (see below), whose sum is σ = 803661336. Its totient is φ = 685088040.

The previous prime is 742178873. The next prime is 742178891. The reversal of 742178879 is 978871247.

742178879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-742178879 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 742178879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742178873) 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, 2195627 + ... + 2195964.

It is an arithmetic number, because the mean of its divisors is an integer number (133943556).

Almost surely, 2^742178879 is an apocalyptic number.

742178879 is a deficient number, since it is larger than the sum of its proper divisors (61482457).

742178879 is a wasteful number, since it uses less digits than its factorization.

742178879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391617 (or 4391604 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 53.

The square root of 742178879 is about 27242.9601732264. The cubic root of 742178879 is about 905.3910498306.

The spelling of 742178879 in words is "seven hundred forty-two million, one hundred seventy-eight thousand, eight hundred seventy-nine".