742789727 has 4 divisors (see below), whose sum is σ = 743003856. Its totient is φ = 742575600.

The previous prime is 742789709. The next prime is 742789757. The reversal of 742789727 is 727987247.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742789727 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 (742789757) 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, 101774 + ... + 108827.

It is an arithmetic number, because the mean of its divisors is an integer number (185750964).

Almost surely, 2^742789727 is an apocalyptic number.

742789727 is a deficient number, since it is larger than the sum of its proper divisors (214129).

742789727 is a wasteful number, since it uses less digits than its factorization.

742789727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214128.

The product of its digits is 2765952, while the sum is 53.

The square root of 742789727 is about 27254.1689838454. The cubic root of 742789727 is about 905.6393748039.

The spelling of 742789727 in words is "seven hundred forty-two million, seven hundred eighty-nine thousand, seven hundred twenty-seven".