2404421 has 2 divisors, whose sum is σ = 2404422. Its totient is φ = 2404420.

The previous prime is 2404417. The next prime is 2404459. The reversal of 2404421 is 1244042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2292196 + 112225 = 1514^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2404421 - 2² = 2404417 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2404421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2404411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202210 + 1202211.

It is an arithmetic number, because the mean of its divisors is an integer number (1202211).

2^2404421 is an apocalyptic number.

It is an amenable number.

2404421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2404421 is an equidigital number, since it uses as much as digits as its factorization.

2404421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2404421 is about 1550.6195535979. The cubic root of 2404421 is about 133.9687496741.

Adding to 2404421 its reverse (1244042), we get a palindrome (3648463).

The spelling of 2404421 in words is "two million, four hundred four thousand, four hundred twenty-one".