2904421 has 8 divisors (see below), whose sum is σ = 3229184. Its totient is φ = 2594160.

The previous prime is 2904413. The next prime is 2904427. The reversal of 2904421 is 1244092.

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

It is a cyclic number.

It is not a de Polignac number, because 2904421 - 2³ = 2904413 is a prime.

It is a super-2 number, since 2×2904421² = 16871322690482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2904392 and 2904401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2904427) 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, 3201 + ... + 4006.

It is an arithmetic number, because the mean of its divisors is an integer number (403648).

2^2904421 is an apocalyptic number.

It is an amenable number.

2904421 is a deficient number, since it is larger than the sum of its proper divisors (324763).

2904421 is a wasteful number, since it uses less digits than its factorization.

2904421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7251.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2904421 is about 1704.2361925508. The cubic root of 2904421 is about 142.6767438607.

The spelling of 2904421 in words is "two million, nine hundred four thousand, four hundred twenty-one".