2320421 has 2 divisors, whose sum is σ = 2320422. Its totient is φ = 2320420.

The previous prime is 2320399. The next prime is 2320427. The reversal of 2320421 is 1240232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2208196 + 112225 = 1486^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320421 - 2¹⁴ = 2304037 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2320396 and 2320405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2320427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160210 + 1160211.

It is an arithmetic number, because the mean of its divisors is an integer number (1160211).

2^2320421 is an apocalyptic number.

It is an amenable number.

2320421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320421 is an equidigital number, since it uses as much as digits as its factorization.

2320421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2320421 is about 1523.2928149243. The cubic root of 2320421 is about 132.3901260728.

Adding to 2320421 its reverse (1240232), we get a palindrome (3560653).

The spelling of 2320421 in words is "two million, three hundred twenty thousand, four hundred twenty-one".