422420144 has 10 divisors (see below), whose sum is σ = 818439060. Its totient is φ = 211210064.

The previous prime is 422420143. The next prime is 422420147. The reversal of 422420144 is 441024224.

It is not an unprimeable number, because it can be changed into a prime (422420143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13200614 + ... + 13200645.

It is an arithmetic number, because the mean of its divisors is an integer number (81843906).

Almost surely, 2^422420144 is an apocalyptic number.

It is an amenable number.

422420144 is a deficient number, since it is larger than the sum of its proper divisors (396018916).

422420144 is a wasteful number, since it uses less digits than its factorization.

422420144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26401267 (or 26401261 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 422420144 is about 20552.8621851070. The cubic root of 422420144 is about 750.3229092492.

Adding to 422420144 its reverse (441024224), we get a palindrome (863444368).

The spelling of 422420144 in words is "four hundred twenty-two million, four hundred twenty thousand, one hundred forty-four".