423129384 has 24 divisors (see below), whose sum is σ = 1145975610. Its totient is φ = 141043104.

The previous prime is 423129383. The next prime is 423129397. The reversal of 423129384 is 483921324.

It can be written as a sum of positive squares in only one way, i.e., 291384900 + 131744484 = 17070^2 + 11478^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (423129383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2938327 + ... + 2938470.

Almost surely, 2^423129384 is an apocalyptic number.

It is an amenable number.

423129384 is an abundant number, since it is smaller than the sum of its proper divisors (722846226).

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

423129384 is a wasteful number, since it uses less digits than its factorization.

423129384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5876809 (or 5876802 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 423129384 is about 20570.1089933914. The cubic root of 423129384 is about 750.7426031448.

The spelling of 423129384 in words is "four hundred twenty-three million, one hundred twenty-nine thousand, three hundred eighty-four".