422000042 has 4 divisors (see below), whose sum is σ = 633000066. Its totient is φ = 211000020.

The previous prime is 422000009. The next prime is 422000053. The reversal of 422000042 is 240000224.

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 + 17547721 = 20111^2 + 4189^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421999990 and 422000026.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500009 + ... + 105500012.

Almost surely, 2^422000042 is an apocalyptic number.

422000042 is a deficient number, since it is larger than the sum of its proper divisors (211000024).

422000042 is a wasteful number, since it uses less digits than its factorization.

422000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211000023.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 422000042 is about 20542.6396064381. The cubic root of 422000042 is about 750.0740916433.

Adding to 422000042 its reverse (240000224), we get a palindrome (662000266).

The spelling of 422000042 in words is "four hundred twenty-two million, forty-two", and thus it is an aban number.