117419721 has 4 divisors (see below), whose sum is σ = 156559632. Its totient is φ = 78279812.

The previous prime is 117419719. The next prime is 117419737. The reversal of 117419721 is 127914711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117419721 - 2¹ = 117419719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117419741) 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 3 ways as a sum of consecutive naturals, for example, 19569951 + ... + 19569956.

It is an arithmetic number, because the mean of its divisors is an integer number (39139908).

Almost surely, 2^117419721 is an apocalyptic number.

It is an amenable number.

117419721 is a deficient number, since it is larger than the sum of its proper divisors (39139911).

117419721 is an equidigital number, since it uses as much as digits as its factorization.

117419721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39139910.

The product of its digits is 3528, while the sum is 33.

The square root of 117419721 is about 10836.0380674857. The cubic root of 117419721 is about 489.6814825710.

The spelling of 117419721 in words is "one hundred seventeen million, four hundred nineteen thousand, seven hundred twenty-one".