203543420 has 12 divisors (see below), whose sum is σ = 427441224. Its totient is φ = 81417360.

The previous prime is 203543413. The next prime is 203543437. The reversal of 203543420 is 24345302.

203543420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5088566 + ... + 5088605.

It is an arithmetic number, because the mean of its divisors is an integer number (35620102).

Almost surely, 2^203543420 is an apocalyptic number.

203543420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203543420 is an abundant number, since it is smaller than the sum of its proper divisors (223897804).

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

203543420 is a wasteful number, since it uses less digits than its factorization.

203543420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10177180 (or 10177178 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 203543420 is about 14266.8644067293. The cubic root of 203543420 is about 588.2370240067.

Adding to 203543420 its reverse (24345302), we get a palindrome (227888722).

The spelling of 203543420 in words is "two hundred three million, five hundred forty-three thousand, four hundred twenty".