422000144 has 20 divisors (see below), whose sum is σ = 829143360. Its totient is φ = 208027680.

The previous prime is 422000123. The next prime is 422000147. The reversal of 422000144 is 441000224.

It is not an unprimeable number, because it can be changed into a prime (422000147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184604 + ... + 186875.

It is an arithmetic number, because the mean of its divisors is an integer number (41457168).

Almost surely, 2^422000144 is an apocalyptic number.

It is an amenable number.

422000144 is a deficient number, since it is larger than the sum of its proper divisors (407143216).

422000144 is a wasteful number, since it uses less digits than its factorization.

422000144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371558 (or 371552 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 422000144 is about 20542.6420890790. The cubic root of 422000144 is about 750.0741520758.

Adding to 422000144 its reverse (441000224), we get a palindrome (863000368).

The spelling of 422000144 in words is "four hundred twenty-two million, one hundred forty-four", and thus it is an aban number.