742831236 has 120 divisors (see below), whose sum is σ = 2240796096. Its totient is φ = 210185280.

The previous prime is 742831223. The next prime is 742831241. The reversal of 742831236 is 632138247.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 742831236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 241146 + ... + 244206.

Almost surely, 2^742831236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742831236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120398048).

742831236 is an abundant number, since it is smaller than the sum of its proper divisors (1497964860).

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

742831236 is a wasteful number, since it uses less digits than its factorization.

742831236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191 (or 3180 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 742831236 is about 27254.9304897297. The cubic root of 742831236 is about 905.6562443087.

The spelling of 742831236 in words is "seven hundred forty-two million, eight hundred thirty-one thousand, two hundred thirty-six".