200123420 has 48 divisors (see below), whose sum is σ = 485085888. Its totient is φ = 67929600.

The previous prime is 200123401. The next prime is 200123431. The reversal of 200123420 is 24321002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 200123395 and 200123404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7064 + ... + 21216.

It is an arithmetic number, because the mean of its divisors is an integer number (10105956).

Almost surely, 2^200123420 is an apocalyptic number.

200123420 is a gapful number since it is divisible by the number (20) 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 200123420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242542944).

200123420 is an abundant number, since it is smaller than the sum of its proper divisors (284962468).

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

200123420 is a wasteful number, since it uses less digits than its factorization.

200123420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14270 (or 14268 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 200123420 is about 14146.4985066977. The cubic root of 200123420 is about 584.9238169963.

Adding to 200123420 its reverse (24321002), we get a palindrome (224444422).

It can be divided in two parts, 20012 and 3420, that added together give a palindrome (23432).

The spelling of 200123420 in words is "two hundred million, one hundred twenty-three thousand, four hundred twenty".