742281732 has 120 divisors (see below), whose sum is σ = 2017838592. Its totient is φ = 237686400.

The previous prime is 742281731. The next prime is 742281769. The reversal of 742281732 is 237182247.

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

It is not an unprimeable number, because it can be changed into a prime (742281731) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2641432 + ... + 2641712.

Almost surely, 2^742281732 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 742281732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008919296).

742281732 is an abundant number, since it is smaller than the sum of its proper divisors (1275556860).

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

742281732 is a wasteful number, since it uses less digits than its factorization.

742281732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 580 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 742281732 is about 27244.8478065120. The cubic root of 742281732 is about 905.4328716819.

The spelling of 742281732 in words is "seven hundred forty-two million, two hundred eighty-one thousand, seven hundred thirty-two".