2998421 has 2 divisors, whose sum is σ = 2998422. Its totient is φ = 2998420.

The previous prime is 2998417. The next prime is 2998423. The reversal of 2998421 is 1248992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2515396 + 483025 = 1586^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2998421 - 2² = 2998417 is a prime.

Together with 2998423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2998423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1499210 + 1499211.

It is an arithmetic number, because the mean of its divisors is an integer number (1499211).

2^2998421 is an apocalyptic number.

It is an amenable number.

2998421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2998421 is an equidigital number, since it uses as much as digits as its factorization.

2998421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 2998421 is about 1731.5949295375. The cubic root of 2998421 is about 144.1996491226.

The spelling of 2998421 in words is "two million, nine hundred ninety-eight thousand, four hundred twenty-one".