742908840 has 64 divisors (see below), whose sum is σ = 2359834560. Its totient is φ = 186455040.

The previous prime is 742908781. The next prime is 742908841. The reversal of 742908840 is 48809247.

742908840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 742908792 and 742908801.

It is not an unprimeable number, because it can be changed into a prime (742908841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180046 + ... + 184125.

It is an arithmetic number, because the mean of its divisors is an integer number (36872415).

Almost surely, 2^742908840 is an apocalyptic number.

It is an amenable number.

742908840 is an abundant number, since it is smaller than the sum of its proper divisors (1616925720).

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

742908840 is a wasteful number, since it uses less digits than its factorization.

742908840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364202 (or 364198 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 742908840 is about 27256.3541215622. The cubic root of 742908840 is about 905.6877813508.

The spelling of 742908840 in words is "seven hundred forty-two million, nine hundred eight thousand, eight hundred forty".