6412421 has 2 divisors, whose sum is σ = 6412422. Its totient is φ = 6412420.

The previous prime is 6412409. The next prime is 6412429. The reversal of 6412421 is 1242146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4056196 + 2356225 = 2014^2 + 1535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6412421 is a prime.

It is a super-2 number, since 2×6412421² = 82238286162482, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6412393 and 6412402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6412429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3206210 + 3206211.

It is an arithmetic number, because the mean of its divisors is an integer number (3206211).

Almost surely, 2^6412421 is an apocalyptic number.

It is an amenable number.

6412421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6412421 is an equidigital number, since it uses as much as digits as its factorization.

6412421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 20.

The square root of 6412421 is about 2532.2758538516. The cubic root of 6412421 is about 185.7835865063.

Adding to 6412421 its reverse (1242146), we get a palindrome (7654567).

The spelling of 6412421 in words is "six million, four hundred twelve thousand, four hundred twenty-one".