203043542 has 16 divisors (see below), whose sum is σ = 328234032. Its totient is φ = 93643680.

The previous prime is 203043541. The next prime is 203043559. The reversal of 203043542 is 245340302.

It is a super-3 number, since 3×203043542³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203043541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56417 + ... + 59907.

It is an arithmetic number, because the mean of its divisors is an integer number (20514627).

Almost surely, 2^203043542 is an apocalyptic number.

203043542 is a deficient number, since it is larger than the sum of its proper divisors (125190490).

203043542 is a wasteful number, since it uses less digits than its factorization.

203043542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5743.

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

The square root of 203043542 is about 14249.3347914911. The cubic root of 203043542 is about 587.7550829537.

Adding to 203043542 its reverse (245340302), we get a palindrome (448383844).

The spelling of 203043542 in words is "two hundred three million, forty-three thousand, five hundred forty-two".