422245421 has 4 divisors (see below), whose sum is σ = 454725852. Its totient is φ = 389764992.

The previous prime is 422245391. The next prime is 422245463. The reversal of 422245421 is 124542224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235622500 + 186622921 = 15350^2 + 13661^2 .

It is a cyclic number.

It is not a de Polignac number, because 422245421 - 2¹⁴ = 422229037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422242421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16240196 + ... + 16240221.

It is an arithmetic number, because the mean of its divisors is an integer number (113681463).

Almost surely, 2^422245421 is an apocalyptic number.

It is an amenable number.

422245421 is a deficient number, since it is larger than the sum of its proper divisors (32480431).

422245421 is a wasteful number, since it uses less digits than its factorization.

422245421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32480430.

The product of its digits is 5120, while the sum is 26.

The square root of 422245421 is about 20548.6111696144. The cubic root of 422245421 is about 750.2194445266.

Adding to 422245421 its reverse (124542224), we get a palindrome (546787645).

The spelling of 422245421 in words is "four hundred twenty-two million, two hundred forty-five thousand, four hundred twenty-one".