200543420 has 48 divisors (see below), whose sum is σ = 525063168. Its totient is φ = 62506560.

The previous prime is 200543411. The next prime is 200543429. The reversal of 200543420 is 24345002.

It is an interprime number because it is at equal distance from previous prime (200543411) and next prime (200543429).

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

It is a junction number, because it is equal to n+sod(n) for n = 200543392 and 200543401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200543429) 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, 63572 + ... + 66651.

It is an arithmetic number, because the mean of its divisors is an integer number (10938816).

Almost surely, 2^200543420 is an apocalyptic number.

200543420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200543420 is an abundant number, since it is smaller than the sum of its proper divisors (324519748).

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

200543420 is a wasteful number, since it uses less digits than its factorization.

200543420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130250 (or 130248 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 200543420 is about 14161.3353890090. The cubic root of 200543420 is about 585.3327252285.

Adding to 200543420 its reverse (24345002), we get a palindrome (224888422).

The spelling of 200543420 in words is "two hundred million, five hundred forty-three thousand, four hundred twenty".