423542500 has 60 divisors (see below), whose sum is σ = 932101632. Its totient is φ = 168340000.

The previous prime is 423542473. The next prime is 423542513. The reversal of 423542500 is 5245324.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 477057 + ... + 477943.

Almost surely, 2^423542500 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 423542500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466050816).

423542500 is an abundant number, since it is smaller than the sum of its proper divisors (508559132).

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

423542500 is a wasteful number, since it uses less digits than its factorization.

423542500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 423542500 is about 20580.1482016044. The cubic root of 423542500 is about 750.9868490838.

Adding to 423542500 its reverse (5245324), we get a palindrome (428787824).

The spelling of 423542500 in words is "four hundred twenty-three million, five hundred forty-two thousand, five hundred".