423133140 has 72 divisors (see below), whose sum is σ = 1203485472. Its totient is φ = 111080640.

The previous prime is 423133129. The next prime is 423133153. The reversal of 423133140 is 41331324.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 268555 + ... + 270125.

It is an arithmetic number, because the mean of its divisors is an integer number (16715076).

Almost surely, 2^423133140 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 423133140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601742736).

423133140 is an abundant number, since it is smaller than the sum of its proper divisors (780352332).

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

423133140 is a wasteful number, since it uses less digits than its factorization.

423133140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 423133140 is about 20570.2002907118. The cubic root of 423133140 is about 750.7448245148.

Adding to 423133140 its reverse (41331324), we get a palindrome (464464464).

The spelling of 423133140 in words is "four hundred twenty-three million, one hundred thirty-three thousand, one hundred forty".