742989220 has 24 divisors (see below), whose sum is σ = 1564001208. Its totient is φ = 296486400.

The previous prime is 742989209. The next prime is 742989239. The reversal of 742989220 is 22989247.

It can be written as a sum of positive squares in 4 ways, for example, as 53611684 + 689377536 = 7322^2 + 26256^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35701 + ... + 52540.

It is an arithmetic number, because the mean of its divisors is an integer number (65166717).

Almost surely, 2^742989220 is an apocalyptic number.

It is an amenable number.

742989220 is an abundant number, since it is smaller than the sum of its proper divisors (821011988).

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

742989220 is a wasteful number, since it uses less digits than its factorization.

742989220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88671 (or 88669 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 742989220 is about 27257.8286002389. The cubic root of 742989220 is about 905.7204442001.

The spelling of 742989220 in words is "seven hundred forty-two million, nine hundred eighty-nine thousand, two hundred twenty".