742547631 has 32 divisors (see below), whose sum is σ = 1152442368. Its totient is φ = 416527200.

The previous prime is 742547599. The next prime is 742547633. The reversal of 742547631 is 136745247.

It is not a de Polignac number, because 742547631 - 2⁵ = 742547599 is a prime.

It is a super-2 number, since 2×742547631² = 1102753968607424322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 742547631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742547633) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 289806 + ... + 292356.

It is an arithmetic number, because the mean of its divisors is an integer number (36013824).

Almost surely, 2^742547631 is an apocalyptic number.

742547631 is a deficient number, since it is larger than the sum of its proper divisors (409894737).

742547631 is a wasteful number, since it uses less digits than its factorization.

742547631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811.

The product of its digits is 141120, while the sum is 39.

The square root of 742547631 is about 27249.7271729462. The cubic root of 742547631 is about 905.5409730236.

The spelling of 742547631 in words is "seven hundred forty-two million, five hundred forty-seven thousand, six hundred thirty-one".