742786979 has 8 divisors (see below), whose sum is σ = 810511920. Its totient is φ = 675095200.

The previous prime is 742786973. The next prime is 742786981. The reversal of 742786979 is 979687247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 742786979 - 2⁴ = 742786963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742786973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74849 + ... + 84189.

It is an arithmetic number, because the mean of its divisors is an integer number (101313990).

Almost surely, 2^742786979 is an apocalyptic number.

742786979 is a deficient number, since it is larger than the sum of its proper divisors (67724941).

742786979 is a wasteful number, since it uses less digits than its factorization.

742786979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16581.

The product of its digits is 10668672, while the sum is 59.

The square root of 742786979 is about 27254.1185694933. The cubic root of 742786979 is about 905.6382579781.

The spelling of 742786979 in words is "seven hundred forty-two million, seven hundred eighty-six thousand, nine hundred seventy-nine".