422642040 has 64 divisors (see below), whose sum is σ = 1272736800. Its totient is φ = 112276992.

The previous prime is 422641991. The next prime is 422642069. The reversal of 422642040 is 40246224.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 422642040.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 25734 + ... + 38826.

Almost surely, 2^422642040 is an apocalyptic number.

422642040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422642040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636368400).

422642040 is an abundant number, since it is smaller than the sum of its proper divisors (850094760).

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

422642040 is a wasteful number, since it uses less digits than its factorization.

422642040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13376 (or 13372 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 422642040 is about 20558.2596539688. The cubic root of 422642040 is about 750.4542670220.

Adding to 422642040 its reverse (40246224), we get a palindrome (462888264).

The spelling of 422642040 in words is "four hundred twenty-two million, six hundred forty-two thousand, forty".