7421013 has 12 divisors (see below), whose sum is σ = 11089260. Its totient is φ = 4776576.

The previous prime is 7421009. The next prime is 7421017. The reversal of 7421013 is 3101247.

It is an interprime number because it is at equal distance from previous prime (7421009) and next prime (7421017).

It can be written as a sum of positive squares in 2 ways, for example, as 3392964 + 4028049 = 1842^2 + 2007^2 .

It is not a de Polignac number, because 7421013 - 2² = 7421009 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13956 + ... + 14477.

It is an arithmetic number, because the mean of its divisors is an integer number (924105).

Almost surely, 2^7421013 is an apocalyptic number.

It is an amenable number.

7421013 is a deficient number, since it is larger than the sum of its proper divisors (3668247).

7421013 is a wasteful number, since it uses less digits than its factorization.

7421013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28468 (or 28465 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 7421013 is about 2724.1536300290. The cubic root of 7421013 is about 195.0537918660.

The spelling of 7421013 in words is "seven million, four hundred twenty-one thousand, thirteen".