7617240121 has 4 divisors (see below), whose sum is σ = 7665757732. Its totient is φ = 7568722512.

The previous prime is 7617240109. The next prime is 7617240157. The reversal of 7617240121 is 1210427167.

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 4873575721 + 2743664400 = 69811^2 + 52380^2 .

It is a cyclic number.

It is not a de Polignac number, because 7617240121 - 2⁵ = 7617240089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7617240821) 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, 24258570 + ... + 24258883.

It is an arithmetic number, because the mean of its divisors is an integer number (1916439433).

Almost surely, 2^7617240121 is an apocalyptic number.

It is an amenable number.

7617240121 is a deficient number, since it is larger than the sum of its proper divisors (48517611).

7617240121 is a wasteful number, since it uses less digits than its factorization.

7617240121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48517610.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 7617240121 is about 87276.8017344815. The cubic root of 7617240121 is about 1967.5806765773.

Adding to 7617240121 its reverse (1210427167), we get a palindrome (8827667288).

The spelling of 7617240121 in words is "seven billion, six hundred seventeen million, two hundred forty thousand, one hundred twenty-one".