742906631 has 8 divisors (see below), whose sum is σ = 782745600. Its totient is φ = 703141560.

The previous prime is 742906621. The next prime is 742906651. The reversal of 742906631 is 136609247.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742906631 is a prime.

It is a super-2 number, since 2×742906631² = 1103820524767540322, 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 (742906621) 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, 2810 + ... + 38648.

It is an arithmetic number, because the mean of its divisors is an integer number (97843200).

Almost surely, 2^742906631 is an apocalyptic number.

742906631 is a deficient number, since it is larger than the sum of its proper divisors (39838969).

742906631 is a wasteful number, since it uses less digits than its factorization.

742906631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36949.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 742906631 is about 27256.3135988710. The cubic root of 742906631 is about 905.6868836783.

The spelling of 742906631 in words is "seven hundred forty-two million, nine hundred six thousand, six hundred thirty-one".