7917048121 has 16 divisors (see below), whose sum is σ = 8566905600. Its totient is φ = 7289388288.

The previous prime is 7917048107. The next prime is 7917048127. The reversal of 7917048121 is 1218407197.

It is a cyclic number.

It is not a de Polignac number, because 7917048121 - 2⁵ = 7917048089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7917048127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119346 + ... + 173428.

It is an arithmetic number, because the mean of its divisors is an integer number (535431600).

Almost surely, 2^7917048121 is an apocalyptic number.

It is an amenable number.

7917048121 is a deficient number, since it is larger than the sum of its proper divisors (649857479).

7917048121 is a wasteful number, since it uses less digits than its factorization.

7917048121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54288.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 7917048121 is about 88977.7956627382. The cubic root of 7917048121 is about 1993.0633124141.

The spelling of 7917048121 in words is "seven billion, nine hundred seventeen million, forty-eight thousand, one hundred twenty-one".