9425421 has 12 divisors (see below), whose sum is σ = 13750620. Its totient is φ = 6220800.

The previous prime is 9425419. The next prime is 9425431. The reversal of 9425421 is 1245249.

9425421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4888521 + 4536900 = 2211^2 + 2130^2 .

It is not a de Polignac number, because 9425421 - 2¹ = 9425419 is a prime.

It is a super-2 number, since 2×9425421² = 177677122054482, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9425431) 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, 4276 + ... + 6093.

It is an arithmetic number, because the mean of its divisors is an integer number (1145885).

Almost surely, 2^9425421 is an apocalyptic number.

It is an amenable number.

9425421 is a deficient number, since it is larger than the sum of its proper divisors (4325199).

9425421 is a wasteful number, since it uses less digits than its factorization.

9425421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10476 (or 10473 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 9425421 is about 3070.0848522476. The cubic root of 9425421 is about 211.2355059323.

The spelling of 9425421 in words is "nine million, four hundred twenty-five thousand, four hundred twenty-one".