203142140 has 24 divisors (see below), whose sum is σ = 429160032. Its totient is φ = 80768960.

The previous prime is 203142119. The next prime is 203142151. The reversal of 203142140 is 41241302.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27071 + ... + 33750.

It is an arithmetic number, because the mean of its divisors is an integer number (17881668).

Almost surely, 2^203142140 is an apocalyptic number.

203142140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203142140 is an abundant number, since it is smaller than the sum of its proper divisors (226017892).

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

203142140 is a wasteful number, since it uses less digits than its factorization.

203142140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60997 (or 60995 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 203142140 is about 14252.7941120329. The cubic root of 203142140 is about 587.8502055684.

Adding to 203142140 its reverse (41241302), we get a palindrome (244383442).

The spelling of 203142140 in words is "two hundred three million, one hundred forty-two thousand, one hundred forty".