742979 has 4 divisors (see below), whose sum is σ = 745680. Its totient is φ = 740280.

The previous prime is 742967. The next prime is 742981. The reversal of 742979 is 979247.

It is a happy number.

742979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979247 = 883 ⋅1109.

It is a cyclic number.

It is not a de Polignac number, because 742979 - 2⁸ = 742723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884 + ... + 1505.

It is an arithmetic number, because the mean of its divisors is an integer number (186420).

2⁷⁴²⁹⁷⁹ is an apocalyptic number.

742979 is a deficient number, since it is larger than the sum of its proper divisors (2701).

742979 is a wasteful number, since it uses less digits than its factorization.

742979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700.

The product of its digits is 31752, while the sum is 38.

The square root of 742979 is about 861.9622961592. The cubic root of 742979 is about 90.5716291378.

The spelling of 742979 in words is "seven hundred forty-two thousand, nine hundred seventy-nine".