2900421 has 32 divisors (see below), whose sum is σ = 4665600. Its totient is φ = 1774080.

The previous prime is 2900419. The next prime is 2900437. The reversal of 2900421 is 1240092.

It is not a de Polignac number, because 2900421 - 2¹ = 2900419 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2900394 and 2900403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2900411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32545 + ... + 32633.

It is an arithmetic number, because the mean of its divisors is an integer number (145800).

2^2900421 is an apocalyptic number.

It is an amenable number.

2900421 is a deficient number, since it is larger than the sum of its proper divisors (1765179).

2900421 is a wasteful number, since it uses less digits than its factorization.

2900421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2900421 is about 1703.0622419630. The cubic root of 2900421 is about 142.6112151179.

It can be divided in two parts, 2900 and 421, that added together give a triangular number (3321 = T₈₁).

The spelling of 2900421 in words is "two million, nine hundred thousand, four hundred twenty-one".