203023142 has 16 divisors (see below), whose sum is σ = 360041760. Its totient is φ = 84009408.

The previous prime is 203023133. The next prime is 203023157. The reversal of 203023142 is 241320302.

It is a self number, because there is not a number n which added to its sum of digits gives 203023142.

It is a congruent number.

It is an unprimeable number.

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, 249623 + ... + 250434.

It is an arithmetic number, because the mean of its divisors is an integer number (22502610).

Almost surely, 2^203023142 is an apocalyptic number.

203023142 is a deficient number, since it is larger than the sum of its proper divisors (157018618).

203023142 is a wasteful number, since it uses less digits than its factorization.

203023142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500095.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 203023142 is about 14248.6189506211. The cubic root of 203023142 is about 587.7353981690.

Adding to 203023142 its reverse (241320302), we get a palindrome (444343444).

The spelling of 203023142 in words is "two hundred three million, twenty-three thousand, one hundred forty-two".