7420521313 has 8 divisors (see below), whose sum is σ = 7434691488. Its totient is φ = 7406365344.

The previous prime is 7420521299. The next prime is 7420521343. The reversal of 7420521313 is 3131250247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7420521313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7420521343) 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, 1819845 + ... + 1823917.

It is an arithmetic number, because the mean of its divisors is an integer number (929336436).

Almost surely, 2^7420521313 is an apocalyptic number.

It is an amenable number.

7420521313 is a deficient number, since it is larger than the sum of its proper divisors (14170175).

7420521313 is a wasteful number, since it uses less digits than its factorization.

7420521313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7103.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 7420521313 is about 86142.4478001409. The cubic root of 7420521313 is about 1950.4948393962.

The spelling of 7420521313 in words is "seven billion, four hundred twenty million, five hundred twenty-one thousand, three hundred thirteen".