203420243 has 8 divisors (see below), whose sum is σ = 219904608. Its totient is φ = 187055424.

The previous prime is 203420237. The next prime is 203420281. The reversal of 203420243 is 342024302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203420243 - 2⁸ = 203419987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203480243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26330 + ... + 33167.

It is an arithmetic number, because the mean of its divisors is an integer number (27488076).

Almost surely, 2^203420243 is an apocalyptic number.

203420243 is a deficient number, since it is larger than the sum of its proper divisors (16484365).

203420243 is a wasteful number, since it uses less digits than its factorization.

203420243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59773.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 203420243 is about 14262.5468623244. The cubic root of 203420243 is about 588.1183402504.

Adding to 203420243 its reverse (342024302), we get a palindrome (545444545).

The spelling of 203420243 in words is "two hundred three million, four hundred twenty thousand, two hundred forty-three".