731239242 has 16 divisors (see below), whose sum is σ = 1466900832. Its totient is φ = 243009360.

The previous prime is 731239217. The next prime is 731239259. The reversal of 731239242 is 242932137.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182113 + ... + 186084.

It is an arithmetic number, because the mean of its divisors is an integer number (91681302).

Almost surely, 2^731239242 is an apocalyptic number.

731239242 is an abundant number, since it is smaller than the sum of its proper divisors (735661590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731239242 is a wasteful number, since it uses less digits than its factorization.

731239242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368533.

The product of its digits is 18144, while the sum is 33.

The square root of 731239242 is about 27041.4356497579. The cubic root of 731239242 is about 900.9205568611.

The spelling of 731239242 in words is "seven hundred thirty-one million, two hundred thirty-nine thousand, two hundred forty-two".