724571121 has 8 divisors (see below), whose sum is σ = 966656704. Its totient is φ = 482766480.

The previous prime is 724571101. The next prime is 724571131. The reversal of 724571121 is 121175427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 724571121 - 2²² = 720376817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724571101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64141 + ... + 74586.

It is an arithmetic number, because the mean of its divisors is an integer number (120832088).

Almost surely, 2^724571121 is an apocalyptic number.

It is an amenable number.

724571121 is a deficient number, since it is larger than the sum of its proper divisors (242085583).

724571121 is a wasteful number, since it uses less digits than its factorization.

724571121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140471.

The product of its digits is 3920, while the sum is 30.

The square root of 724571121 is about 26917.8587744271. The cubic root of 724571121 is about 898.1737126388.

The spelling of 724571121 in words is "seven hundred twenty-four million, five hundred seventy-one thousand, one hundred twenty-one".