422254621 has 2 divisors, whose sum is σ = 422254622. Its totient is φ = 422254620.

The previous prime is 422254607. The next prime is 422254633. The reversal of 422254621 is 126452224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386122500 + 36132121 = 19650^2 + 6011^2 .

It is a cyclic number.

It is not a de Polignac number, because 422254621 - 2⁵ = 422254589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422254621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422254661) 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, 211127310 + 211127311.

It is an arithmetic number, because the mean of its divisors is an integer number (211127311).

Almost surely, 2^422254621 is an apocalyptic number.

It is an amenable number.

422254621 is a deficient number, since it is larger than the sum of its proper divisors (1).

422254621 is an equidigital number, since it uses as much as digits as its factorization.

422254621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 422254621 is about 20548.8350278063. The cubic root of 422254621 is about 750.2248931499.

The spelling of 422254621 in words is "four hundred twenty-two million, two hundred fifty-four thousand, six hundred twenty-one".