422403442 has 4 divisors (see below), whose sum is σ = 633605166. Its totient is φ = 211201720.

The previous prime is 422403413. The next prime is 422403493. The reversal of 422403442 is 244304224.

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., 400040001 + 22363441 = 20001^2 + 4729^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105600859 + ... + 105600862.

Almost surely, 2^422403442 is an apocalyptic number.

422403442 is a deficient number, since it is larger than the sum of its proper divisors (211201724).

422403442 is a wasteful number, since it uses less digits than its factorization.

422403442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211201723.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 422403442 is about 20552.4558629863. The cubic root of 422403442 is about 750.3130201545.

Adding to 422403442 its reverse (244304224), we get a palindrome (666707666).

The spelling of 422403442 in words is "four hundred twenty-two million, four hundred three thousand, four hundred forty-two".