7440715121 has 8 divisors (see below), whose sum is σ = 8677219200. Its totient is φ = 6377755524.

The previous prime is 7440715111. The next prime is 7440715127. The reversal of 7440715121 is 1215170447.

It is not a de Polignac number, because 7440715121 - 2²⁶ = 7373606257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7440715127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10846181 + ... + 10846866.

It is an arithmetic number, because the mean of its divisors is an integer number (1084652400).

Almost surely, 2^7440715121 is an apocalyptic number.

It is an amenable number.

7440715121 is a deficient number, since it is larger than the sum of its proper divisors (1236504079).

7440715121 is an equidigital number, since it uses as much as digits as its factorization.

7440715121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21693068 (or 21693054 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 7440715121 is about 86259.5798795705. The cubic root of 7440715121 is about 1952.2625607895.

Adding to 7440715121 its reverse (1215170447), we get a palindrome (8655885568).

The spelling of 7440715121 in words is "seven billion, four hundred forty million, seven hundred fifteen thousand, one hundred twenty-one".