718354121 has 4 divisors (see below), whose sum is σ = 718471572. Its totient is φ = 718236672.

The previous prime is 718354097. The next prime is 718354139. The reversal of 718354121 is 121453817.

718354121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 308494096 + 409860025 = 17564^2 + 20245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718354121 is a prime.

It is a super-3 number, since 3×718354121³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (718350121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49016 + ... + 61961.

It is an arithmetic number, because the mean of its divisors is an integer number (179617893).

Almost surely, 2^718354121 is an apocalyptic number.

It is an amenable number.

718354121 is a deficient number, since it is larger than the sum of its proper divisors (117451).

718354121 is a wasteful number, since it uses less digits than its factorization.

718354121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117450.

The product of its digits is 6720, while the sum is 32.

The square root of 718354121 is about 26802.1290385671. The cubic root of 718354121 is about 895.5974791847.

The spelling of 718354121 in words is "seven hundred eighteen million, three hundred fifty-four thousand, one hundred twenty-one".