742721272 has 32 divisors (see below), whose sum is σ = 1415383200. Its totient is φ = 365313024.

The previous prime is 742721237. The next prime is 742721297. The reversal of 742721272 is 272127247.

It is a congruent number.

It is an unprimeable number.

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, 254928 + ... + 257824.

It is an arithmetic number, because the mean of its divisors is an integer number (44230725).

Almost surely, 2^742721272 is an apocalyptic number.

It is an amenable number.

742721272 is a deficient number, since it is larger than the sum of its proper divisors (672661928).

742721272 is a wasteful number, since it uses less digits than its factorization.

742721272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415 (or 3411 counting only the distinct ones).

The product of its digits is 21952, while the sum is 34.

The square root of 742721272 is about 27252.9130919981. The cubic root of 742721272 is about 905.6115529113.

The spelling of 742721272 in words is "seven hundred forty-two million, seven hundred twenty-one thousand, two hundred seventy-two".