742519679 has 4 divisors (see below), whose sum is σ = 810021480. Its totient is φ = 675017880.

The previous prime is 742519669. The next prime is 742519681. The reversal of 742519679 is 976915247.

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 742519679 - 2⁸ = 742519423 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 (742519619) 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, 33750884 + ... + 33750905.

It is an arithmetic number, because the mean of its divisors is an integer number (202505370).

Almost surely, 2^742519679 is an apocalyptic number.

742519679 is a deficient number, since it is larger than the sum of its proper divisors (67501801).

742519679 is a wasteful number, since it uses less digits than its factorization.

742519679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67501800.

The product of its digits is 952560, while the sum is 50.

The square root of 742519679 is about 27249.2142822504. The cubic root of 742519679 is about 905.5296103411.

The spelling of 742519679 in words is "seven hundred forty-two million, five hundred nineteen thousand, six hundred seventy-nine".