742815479 has 4 divisors (see below), whose sum is σ = 848931984. Its totient is φ = 636698976.

The previous prime is 742815467. The next prime is 742815481. The reversal of 742815479 is 974518247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 742815479 - 2²⁰ = 741766903 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 (742815379) 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, 53058242 + ... + 53058255.

It is an arithmetic number, because the mean of its divisors is an integer number (212232996).

Almost surely, 2^742815479 is an apocalyptic number.

742815479 is a deficient number, since it is larger than the sum of its proper divisors (106116505).

742815479 is a wasteful number, since it uses less digits than its factorization.

742815479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106116504.

The product of its digits is 564480, while the sum is 47.

The square root of 742815479 is about 27254.6414212332. The cubic root of 742815479 is about 905.6498406440.

The spelling of 742815479 in words is "seven hundred forty-two million, eight hundred fifteen thousand, four hundred seventy-nine".