721341124 has 12 divisors (see below), whose sum is σ = 1442682304. Its totient is φ = 309146184.

The previous prime is 721341121. The next prime is 721341133. The reversal of 721341124 is 421143127.

721341124 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (721341121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12881064 + ... + 12881119.

Almost surely, 2^721341124 is an apocalyptic number.

It is an amenable number.

721341124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

721341124 is a wasteful number, since it uses less digits than its factorization.

721341124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25762194 (or 25762192 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 721341124 is about 26857.7944738580. The cubic root of 721341124 is about 896.8370966900.

The spelling of 721341124 in words is "seven hundred twenty-one million, three hundred forty-one thousand, one hundred twenty-four".