9045421 has 16 divisors (see below), whose sum is σ = 11427840. Its totient is φ = 6954480.

The previous prime is 9045409. The next prime is 9045431. The reversal of 9045421 is 1245409.

It is a cyclic number.

It is not a de Polignac number, because 9045421 - 2⁵ = 9045389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9045431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5340 + ... + 6826.

It is an arithmetic number, because the mean of its divisors is an integer number (714240).

Almost surely, 2^9045421 is an apocalyptic number.

It is an amenable number.

9045421 is a deficient number, since it is larger than the sum of its proper divisors (2382419).

9045421 is a wasteful number, since it uses less digits than its factorization.

9045421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 9045421 is about 3007.5606394552. The cubic root of 9045421 is about 208.3577193143.

The spelling of 9045421 in words is "nine million, forty-five thousand, four hundred twenty-one".