422041421 has 4 divisors (see below), whose sum is σ = 440391072. Its totient is φ = 403691772.

The previous prime is 422041387. The next prime is 422041423. The reversal of 422041421 is 124140224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422041421 - 2²² = 417847117 is a prime.

It is a super-2 number, since 2×422041421² = 356237922079398482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422041393 and 422041402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422041423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9174791 + ... + 9174836.

It is an arithmetic number, because the mean of its divisors is an integer number (110097768).

Almost surely, 2^422041421 is an apocalyptic number.

It is an amenable number.

422041421 is a deficient number, since it is larger than the sum of its proper divisors (18349651).

422041421 is a wasteful number, since it uses less digits than its factorization.

422041421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18349650.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 422041421 is about 20543.6467308022. The cubic root of 422041421 is about 750.0986068869.

Adding to 422041421 its reverse (124140224), we get a palindrome (546181645).

The spelling of 422041421 in words is "four hundred twenty-two million, forty-one thousand, four hundred twenty-one".