422438402 has 4 divisors (see below), whose sum is σ = 633657606. Its totient is φ = 211219200.

The previous prime is 422438363. The next prime is 422438431. The reversal of 422438402 is 204834224.

It is a happy number.

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., 404452321 + 17986081 = 20111^2 + 4241^2 .

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, 105609599 + ... + 105609602.

Almost surely, 2^422438402 is an apocalyptic number.

422438402 is a deficient number, since it is larger than the sum of its proper divisors (211219204).

422438402 is a wasteful number, since it uses less digits than its factorization.

422438402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211219203.

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 422438402 is about 20553.3063520203. The cubic root of 422438402 is about 750.3337193384. Note that the first 3 decimals are identical.

The spelling of 422438402 in words is "four hundred twenty-two million, four hundred thirty-eight thousand, four hundred two".