910421 has 2 divisors, whose sum is σ = 910422. Its totient is φ = 910420.

The previous prime is 910369. The next prime is 910447. The reversal of 910421 is 124019.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 7921 = 950^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 910421 - 2¹⁴ = 894037 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p₇₂₀₅₃ and since 910421 and 72053 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 910421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (910451) 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, 455210 + 455211.

It is an arithmetic number, because the mean of its divisors is an integer number (455211).

2⁹¹⁰⁴²¹ is an apocalyptic number.

It is an amenable number.

910421 is a deficient number, since it is larger than the sum of its proper divisors (1).

910421 is an equidigital number, since it uses as much as digits as its factorization.

910421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 910421 is about 954.1598398591. The cubic root of 910421 is about 96.9201525208.

It can be divided in two parts, 910 and 421, that added together give a palindrome (1331).

The spelling of 910421 in words is "nine hundred ten thousand, four hundred twenty-one".