422036521 has 4 divisors (see below), whose sum is σ = 423605700. Its totient is φ = 420467344.

The previous prime is 422036519. The next prime is 422036539. The reversal of 422036521 is 125630224.

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 172554496 + 249482025 = 13136^2 + 15795^2 .

It is a cyclic number.

It is not a de Polignac number, because 422036521 - 2¹ = 422036519 is a prime.

It is a super-2 number, since 2×422036521² = 356229650115566882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422036501) 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 in 3 ways as a sum of consecutive naturals, for example, 784186 + ... + 784723.

It is an arithmetic number, because the mean of its divisors is an integer number (105901425).

Almost surely, 2^422036521 is an apocalyptic number.

It is an amenable number.

422036521 is a deficient number, since it is larger than the sum of its proper divisors (1569179).

422036521 is a wasteful number, since it uses less digits than its factorization.

422036521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569178.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 422036521 is about 20543.5274721748. The cubic root of 422036521 is about 750.0957039353.

Adding to 422036521 its reverse (125630224), we get a palindrome (547666745).

The spelling of 422036521 in words is "four hundred twenty-two million, thirty-six thousand, five hundred twenty-one".