744742431 has 20 divisors (see below), whose sum is σ = 1113431352. Its totient is φ = 496086768.

The previous prime is 744742399. The next prime is 744742441. The reversal of 744742431 is 134247447.

It is a happy number.

It is not a de Polignac number, because 744742431 - 2⁵ = 744742399 is a prime.

It is a super-2 number, since 2×744742431² = 1109282577063579522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744742441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 120345 + ... + 126381.

Almost surely, 2^744742431 is an apocalyptic number.

744742431 is a deficient number, since it is larger than the sum of its proper divisors (368688921).

744742431 is a wasteful number, since it uses less digits than its factorization.

744742431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7572 (or 7563 counting only the distinct ones).

The product of its digits is 75264, while the sum is 36.

The square root of 744742431 is about 27289.9694210162. The cubic root of 744742431 is about 906.4322857039.

Adding to 744742431 its reverse (134247447), we get a palindrome (878989878).

The spelling of 744742431 in words is "seven hundred forty-four million, seven hundred forty-two thousand, four hundred thirty-one".