423129330 has 48 divisors (see below), whose sum is σ = 1184765400. Its totient is φ = 104154624.

The previous prime is 423129319. The next prime is 423129359. The reversal of 423129330 is 33921324.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 348531561 + 74597769 = 18669^2 + 8637^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 423129294 and 423129303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179655 + ... + 181994.

Almost surely, 2^423129330 is an apocalyptic number.

423129330 is an abundant number, since it is smaller than the sum of its proper divisors (761636070).

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

423129330 is a wasteful number, since it uses less digits than its factorization.

423129330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361675 (or 361672 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 423129330 is about 20570.1076808071. The cubic root of 423129330 is about 750.7425712080.

The spelling of 423129330 in words is "four hundred twenty-three million, one hundred twenty-nine thousand, three hundred thirty".