7421237 has 2 divisors, whose sum is σ = 7421238. Its totient is φ = 7421236.

The previous prime is 7421213. The next prime is 7421251. The reversal of 7421237 is 7321247.

7421237 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4990756 + 2430481 = 2234^2 + 1559^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421237 - 2⁶ = 7421173 is a prime.

It is a super-2 number, since 2×7421237² = 110149517220338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7421207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710618 + 3710619.

It is an arithmetic number, because the mean of its divisors is an integer number (3710619).

Almost surely, 2^7421237 is an apocalyptic number.

It is an amenable number.

7421237 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421237 is an equidigital number, since it uses as much as digits as its factorization.

7421237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 26.

The square root of 7421237 is about 2724.1947434058. The cubic root of 7421237 is about 195.0557543837.

The spelling of 7421237 in words is "seven million, four hundred twenty-one thousand, two hundred thirty-seven".