423424100 has 72 divisors (see below), whose sum is σ = 1061369568. Its totient is φ = 144908800.

The previous prime is 423424069. The next prime is 423424103. The reversal of 423424100 is 1424324.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (423424103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7379 + ... + 30021.

It is an arithmetic number, because the mean of its divisors is an integer number (14741244).

Almost surely, 2^423424100 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 423424100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530684784).

423424100 is an abundant number, since it is smaller than the sum of its proper divisors (637945468).

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

423424100 is a wasteful number, since it uses less digits than its factorization.

423424100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22685 (or 22678 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 423424100 is about 20577.2714420547. The cubic root of 423424100 is about 750.9168638760.

Adding to 423424100 its reverse (1424324), we get a palindrome (424848424).

The spelling of 423424100 in words is "four hundred twenty-three million, four hundred twenty-four thousand, one hundred".