422220540 has 48 divisors (see below), whose sum is σ = 1351107072. Its totient is φ = 96507456.

The previous prime is 422220521. The next prime is 422220559. The reversal of 422220540 is 45022224.

It is an interprime number because it is at equal distance from previous prime (422220521) and next prime (422220559).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502224 + ... + 503063.

It is an arithmetic number, because the mean of its divisors is an integer number (28148064).

Almost surely, 2^422220540 is an apocalyptic number.

It is an amenable number.

422220540 is an abundant number, since it is smaller than the sum of its proper divisors (928886532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422220540 is a wasteful number, since it uses less digits than its factorization.

422220540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005306 (or 1005304 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 422220540 is about 20548.0057426506. The cubic root of 422220540 is about 750.2047085652.

Adding to 422220540 its reverse (45022224), we get a palindrome (467242764).

The spelling of 422220540 in words is "four hundred twenty-two million, two hundred twenty thousand, five hundred forty".