742634731 has 4 divisors (see below), whose sum is σ = 742756000. Its totient is φ = 742513464.

The previous prime is 742634713. The next prime is 742634743. The reversal of 742634731 is 137436247.

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 742634731 - 2⁹ = 742634219 is a prime.

It is a super-2 number, since 2×742634731² = 1103012687374884722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742634701) 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, 50931 + ... + 63868.

It is an arithmetic number, because the mean of its divisors is an integer number (185689000).

Almost surely, 2^742634731 is an apocalyptic number.

742634731 is a deficient number, since it is larger than the sum of its proper divisors (121269).

742634731 is a wasteful number, since it uses less digits than its factorization.

742634731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121268.

The product of its digits is 84672, while the sum is 37.

The square root of 742634731 is about 27251.3253072213. The cubic root of 742634731 is about 905.5763779511.

The spelling of 742634731 in words is "seven hundred forty-two million, six hundred thirty-four thousand, seven hundred thirty-one".