742756831 has 8 divisors (see below), whose sum is σ = 746713440. Its totient is φ = 738811392.

The previous prime is 742756829. The next prime is 742756837. The reversal of 742756831 is 138657247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 742756831 - 2¹ = 742756829 is a prime.

It is a super-2 number, since 2×742756831² = 1103375419994325122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742756837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152571 + ... + 157363.

It is an arithmetic number, because the mean of its divisors is an integer number (93339180).

Almost surely, 2^742756831 is an apocalyptic number.

742756831 is a deficient number, since it is larger than the sum of its proper divisors (3956609).

742756831 is a wasteful number, since it uses less digits than its factorization.

742756831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5585.

The product of its digits is 282240, while the sum is 43.

The square root of 742756831 is about 27253.5654731633. The cubic root of 742756831 is about 905.6260052272.

The spelling of 742756831 in words is "seven hundred forty-two million, seven hundred fifty-six thousand, eight hundred thirty-one".