7425121 has 8 divisors (see below), whose sum is σ = 8128224. Its totient is φ = 6726720.

The previous prime is 7425083. The next prime is 7425133. The reversal of 7425121 is 1215247.

It is a happy number.

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

It is not a de Polignac number, because 7425121 - 2⁷ = 7424993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7425092 and 7425101.

It is not an unprimeable number, because it can be changed into a prime (7425161) 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, 2706 + ... + 4708.

It is an arithmetic number, because the mean of its divisors is an integer number (1016028).

Almost surely, 2^7425121 is an apocalyptic number.

It is an amenable number.

7425121 is a deficient number, since it is larger than the sum of its proper divisors (703103).

7425121 is a wasteful number, since it uses less digits than its factorization.

7425121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its digits is 560, while the sum is 22.

The square root of 7425121 is about 2724.9075213666. The cubic root of 7425121 is about 195.0897767631.

The spelling of 7425121 in words is "seven million, four hundred twenty-five thousand, one hundred twenty-one".