2023421 has 2 divisors, whose sum is σ = 2023422. Its totient is φ = 2023420.

The previous prime is 2023393. The next prime is 2023433. The reversal of 2023421 is 1243202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1999396 + 24025 = 1414^2 + 155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023421 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2023396 and 2023405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2023121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011710 + 1011711.

It is an arithmetic number, because the mean of its divisors is an integer number (1011711).

2^2023421 is an apocalyptic number.

It is an amenable number.

2023421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023421 is an equidigital number, since it uses as much as digits as its factorization.

2023421 is an evil number, because the sum of its binary digits is even.

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

The square root of 2023421 is about 1422.4700348338. The cubic root of 2023421 is about 126.4820077834.

Adding to 2023421 its reverse (1243202), we get a palindrome (3266623).

The spelling of 2023421 in words is "two million, twenty-three thousand, four hundred twenty-one".