203144542 has 8 divisors (see below), whose sum is σ = 320754600. Its totient is φ = 96226344.

The previous prime is 203144537. The next prime is 203144549. The reversal of 203144542 is 245441302.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203144549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2672917 + ... + 2672992.

It is an arithmetic number, because the mean of its divisors is an integer number (40094325).

Almost surely, 2^203144542 is an apocalyptic number.

203144542 is a deficient number, since it is larger than the sum of its proper divisors (117610058).

203144542 is a wasteful number, since it uses less digits than its factorization.

203144542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345930.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 203144542 is about 14252.8783759632. The cubic root of 203144542 is about 587.8525225185.

Adding to 203144542 its reverse (245441302), we get a palindrome (448585844).

The spelling of 203144542 in words is "two hundred three million, one hundred forty-four thousand, five hundred forty-two".