423000000 has 294 divisors, whose sum is σ = 1547792688. Its totient is φ = 110400000.

The previous prime is 422999989. The next prime is 423000031. The reversal of 423000000 is 324.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 8999977 + ... + 9000023.

Almost surely, 2^423000000 is an apocalyptic number.

423000000 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 423000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773896344).

423000000 is an abundant number, since it is smaller than the sum of its proper divisors (1124792688).

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

423000000 is an frugal number, since it uses more digits than its factorization.

423000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 423000000 is about 20566.9638012031. The cubic root of 423000000 is about 750.6660749504. Note that the first 3 decimals are identical.

Adding to 423000000 its reverse (324), we get a palindrome (423000324).

The spelling of 423000000 in words is "four hundred twenty-three million", and thus it is an aban number.