422140424 has 8 divisors (see below), whose sum is σ = 791513310. Its totient is φ = 211070208.

The previous prime is 422140403. The next prime is 422140427. The reversal of 422140424 is 424041224.

It can be written as a sum of positive squares in only one way, i.e., 218507524 + 203632900 = 14782^2 + 14270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 422140424.

It is not an unprimeable number, because it can be changed into a prime (422140427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26383769 + ... + 26383784.

Almost surely, 2^422140424 is an apocalyptic number.

It is an amenable number.

422140424 is a deficient number, since it is larger than the sum of its proper divisors (369372886).

422140424 is a wasteful number, since it uses less digits than its factorization.

422140424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52767559 (or 52767555 counting only the distinct ones).

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

The square root of 422140424 is about 20546.0561665737. The cubic root of 422140424 is about 750.1572553217.

Adding to 422140424 its reverse (424041224), we get a palindrome (846181648).

The spelling of 422140424 in words is "four hundred twenty-two million, one hundred forty thousand, four hundred twenty-four".