201230420 has 48 divisors (see below), whose sum is σ = 449018640. Its totient is φ = 75608064.

The previous prime is 201230417. The next prime is 201230423. The reversal of 201230420 is 24032102.

201230420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201230417) and next prime (201230423).

It can be written as a sum of positive squares in 8 ways, for example, as 611524 + 200618896 = 782^2 + 14164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201230395 and 201230404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201230423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16772 + ... + 26148.

It is an arithmetic number, because the mean of its divisors is an integer number (9354555).

Almost surely, 2^201230420 is an apocalyptic number.

201230420 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 201230420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224509320).

201230420 is an abundant number, since it is smaller than the sum of its proper divisors (247788220).

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

201230420 is a wasteful number, since it uses less digits than its factorization.

201230420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9452 (or 9450 counting only the distinct ones).

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

The square root of 201230420 is about 14185.5708380030. The cubic root of 201230420 is about 586.0003533334. Note that the first 3 decimals are identical.

Adding to 201230420 its reverse (24032102), we get a palindrome (225262522).

The spelling of 201230420 in words is "two hundred one million, two hundred thirty thousand, four hundred twenty".