117370721 has 8 divisors (see below), whose sum is σ = 126945000. Its totient is φ = 107874432.

The previous prime is 117370661. The next prime is 117370723. The reversal of 117370721 is 127073711.

117370721 = 251² + 252² + ... + 716².

It can be written as a sum of positive squares in 4 ways, for example, as 190096 + 117180625 = 436^2 + 10825^2 .

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 117370721 - 2¹⁰ = 117369697 is a prime.

It is a super-2 number, since 2×117370721² = 27551772296119682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117370723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16346 + ... + 22403.

It is an arithmetic number, because the mean of its divisors is an integer number (15868125).

Almost surely, 2^117370721 is an apocalyptic number.

It is an amenable number.

117370721 is a deficient number, since it is larger than the sum of its proper divisors (9574279).

117370721 is a wasteful number, since it uses less digits than its factorization.

117370721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38995.

The product of its (nonzero) digits is 2058, while the sum is 29.

The square root of 117370721 is about 10833.7768575876. The cubic root of 117370721 is about 489.6133573563.

The spelling of 117370721 in words is "one hundred seventeen million, three hundred seventy thousand, seven hundred twenty-one".