9240375721 has 8 divisors (see below), whose sum is σ = 9785469600. Its totient is φ = 8695453248.

The previous prime is 9240375719. The next prime is 9240375791. The reversal of 9240375721 is 1275730429.

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

It is a cyclic number.

It is not a de Polignac number, because 9240375721 - 2¹ = 9240375719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9240375791) 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, 77890 + ... + 156676.

It is an arithmetic number, because the mean of its divisors is an integer number (1223183700).

Almost surely, 2^9240375721 is an apocalyptic number.

It is an amenable number.

9240375721 is a deficient number, since it is larger than the sum of its proper divisors (545093879).

9240375721 is a wasteful number, since it uses less digits than its factorization.

9240375721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85703.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 9240375721 is about 96126.8730428698. The cubic root of 9240375721 is about 2098.4399389204.

The spelling of 9240375721 in words is "nine billion, two hundred forty million, three hundred seventy-five thousand, seven hundred twenty-one".