422532421 has 4 divisors (see below), whose sum is σ = 429459244. Its totient is φ = 415605600.

The previous prime is 422532403. The next prime is 422532427. The reversal of 422532421 is 124235224.

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 207763396 + 214769025 = 14414^2 + 14655^2 .

It is a cyclic number.

It is not a de Polignac number, because 422532421 - 2⁷ = 422532293 is a prime.

It is a super-2 number, since 2×422532421² = 357067293592242482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422532427) 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, 3463320 + ... + 3463441.

It is an arithmetic number, because the mean of its divisors is an integer number (107364811).

Almost surely, 2^422532421 is an apocalyptic number.

It is an amenable number.

422532421 is a deficient number, since it is larger than the sum of its proper divisors (6926823).

422532421 is an equidigital number, since it uses as much as digits as its factorization.

422532421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6926822.

The product of its digits is 3840, while the sum is 25.

The square root of 422532421 is about 20555.5934236888. The cubic root of 422532421 is about 750.3893806235.

Adding to 422532421 its reverse (124235224), we get a palindrome (546767645).

The spelling of 422532421 in words is "four hundred twenty-two million, five hundred thirty-two thousand, four hundred twenty-one".