422534140 has 48 divisors (see below), whose sum is σ = 1023422400. Its totient is φ = 143534592.

The previous prime is 422534131. The next prime is 422534149. The reversal of 422534140 is 41435224.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (422534131) and next prime (422534149).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422534149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1416 + ... + 29104.

It is an arithmetic number, because the mean of its divisors is an integer number (21321300).

Almost surely, 2^422534140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422534140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511711200).

422534140 is an abundant number, since it is smaller than the sum of its proper divisors (600888260).

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

422534140 is a wasteful number, since it uses less digits than its factorization.

422534140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27814 (or 27812 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 422534140 is about 20555.6352370828. The cubic root of 422534140 is about 750.3903982318.

Adding to 422534140 its reverse (41435224), we get a palindrome (463969364).

The spelling of 422534140 in words is "four hundred twenty-two million, five hundred thirty-four thousand, one hundred forty".