2902421 has 8 divisors (see below), whose sum is σ = 3076320. Its totient is φ = 2730672.

The previous prime is 2902411. The next prime is 2902423. The reversal of 2902421 is 1242092.

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 2902421 - 2⁶ = 2902357 is a prime.

It is a super-2 number, since 2×2902421² = 16848095322482, 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 = 2902393 and 2902402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2902423) 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, 2846 + ... + 3728.

It is an arithmetic number, because the mean of its divisors is an integer number (384540).

2^2902421 is an apocalyptic number.

It is an amenable number.

2902421 is a deficient number, since it is larger than the sum of its proper divisors (173899).

2902421 is a wasteful number, since it uses less digits than its factorization.

2902421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2902421 is about 1703.6493183751. The cubic root of 2902421 is about 142.6439870151.

The spelling of 2902421 in words is "two million, nine hundred two thousand, four hundred twenty-one".