7240965121 has 4 divisors (see below), whose sum is σ = 7797962452. Its totient is φ = 6683967792.

The previous prime is 7240965107. The next prime is 7240965139. The reversal of 7240965121 is 1215690427.

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 4642514496 + 2598450625 = 68136^2 + 50975^2 .

It is a cyclic number.

It is not a de Polignac number, because 7240965121 - 2²³ = 7232576513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7240965421) 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, 278498646 + ... + 278498671.

It is an arithmetic number, because the mean of its divisors is an integer number (1949490613).

Almost surely, 2^7240965121 is an apocalyptic number.

It is an amenable number.

7240965121 is a deficient number, since it is larger than the sum of its proper divisors (556997331).

7240965121 is a wasteful number, since it uses less digits than its factorization.

7240965121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556997330.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 7240965121 is about 85093.8606539861. The cubic root of 7240965121 is about 1934.6340113537.

The spelling of 7240965121 in words is "seven billion, two hundred forty million, nine hundred sixty-five thousand, one hundred twenty-one".