422642426 has 4 divisors (see below), whose sum is σ = 633963642. Its totient is φ = 211321212.

The previous prime is 422642419. The next prime is 422642459. The reversal of 422642426 is 624246224.

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

It can be written as a sum of positive squares in only one way, i.e., 411075625 + 11566801 = 20275^2 + 3401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 422642392 and 422642401.

It is an unprimeable number.

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, 105660605 + ... + 105660608.

Almost surely, 2^422642426 is an apocalyptic number.

422642426 is a deficient number, since it is larger than the sum of its proper divisors (211321216).

422642426 is a wasteful number, since it uses less digits than its factorization.

422642426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211321215.

The product of its digits is 36864, while the sum is 32.

The square root of 422642426 is about 20558.2690419208. The cubic root of 422642426 is about 750.4544954858.

The spelling of 422642426 in words is "four hundred twenty-two million, six hundred forty-two thousand, four hundred twenty-six".