422643012 has 48 divisors (see below), whose sum is σ = 1081346112. Its totient is φ = 127415680.

The previous prime is 422642993. The next prime is 422643029. The reversal of 422643012 is 210346224.

It is a super-3 number, since 3×422643012³ (a number of 27 digits) contains 333 as substring.

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, 17878 + ... + 34130.

It is an arithmetic number, because the mean of its divisors is an integer number (22528044).

Almost surely, 2^422643012 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 422643012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540673056).

422643012 is an abundant number, since it is smaller than the sum of its proper divisors (658703100).

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

422643012 is a wasteful number, since it uses less digits than its factorization.

422643012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16468 (or 16466 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 422643012 is about 20558.2832940885. The cubic root of 422643012 is about 750.4548423244.

Adding to 422643012 its reverse (210346224), we get a palindrome (632989236).

The spelling of 422643012 in words is "four hundred twenty-two million, six hundred forty-three thousand, twelve".