7416421 has 2 divisors, whose sum is σ = 7416422. Its totient is φ = 7416420.

The previous prime is 7416379. The next prime is 7416443. The reversal of 7416421 is 1246147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7365796 + 50625 = 2714^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 7416421 - 2¹¹ = 7414373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7416481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3708210 + 3708211.

It is an arithmetic number, because the mean of its divisors is an integer number (3708211).

Almost surely, 2^7416421 is an apocalyptic number.

It is an amenable number.

7416421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7416421 is an equidigital number, since it uses as much as digits as its factorization.

7416421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 7416421 is about 2723.3106690203. The cubic root of 7416421 is about 195.0135515456.

The spelling of 7416421 in words is "seven million, four hundred sixteen thousand, four hundred twenty-one".