8716240121 has 4 divisors (see below), whose sum is σ = 8771757732. Its totient is φ = 8660722512.

The previous prime is 8716240037. The next prime is 8716240123. The reversal of 8716240121 is 1210426178.

It is a happy number.

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 2023200400 + 6693039721 = 44980^2 + 81811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8716240121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8716240123) 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, 27758570 + ... + 27758883.

It is an arithmetic number, because the mean of its divisors is an integer number (2192939433).

Almost surely, 2^8716240121 is an apocalyptic number.

It is an amenable number.

8716240121 is a deficient number, since it is larger than the sum of its proper divisors (55517611).

8716240121 is a wasteful number, since it uses less digits than its factorization.

8716240121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55517610.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 8716240121 is about 93360.8061286962. The cubic root of 8716240121 is about 2057.9890610159.

Adding to 8716240121 its reverse (1210426178), we get a palindrome (9926666299).

The spelling of 8716240121 in words is "eight billion, seven hundred sixteen million, two hundred forty thousand, one hundred twenty-one".