203211142 has 4 divisors (see below), whose sum is σ = 304816716. Its totient is φ = 101605570.

The previous prime is 203211139. The next prime is 203211143. The reversal of 203211142 is 241112302.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203211143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50802784 + ... + 50802787.

It is an arithmetic number, because the mean of its divisors is an integer number (76204179).

Almost surely, 2^203211142 is an apocalyptic number.

203211142 is a deficient number, since it is larger than the sum of its proper divisors (101605574).

203211142 is a wasteful number, since it uses less digits than its factorization.

203211142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101605573.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 203211142 is about 14255.2145546814. The cubic root of 203211142 is about 587.9167570776.

Adding to 203211142 its reverse (241112302), we get a palindrome (444323444).

The spelling of 203211142 in words is "two hundred three million, two hundred eleven thousand, one hundred forty-two".