201443142 has 16 divisors (see below), whose sum is σ = 410488560. Its totient is φ = 65880672.

The previous prime is 201443113. The next prime is 201443173. The reversal of 201443142 is 241344102.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 316417 + ... + 317052.

It is an arithmetic number, because the mean of its divisors is an integer number (25655535).

Almost surely, 2^201443142 is an apocalyptic number.

201443142 is an abundant number, since it is smaller than the sum of its proper divisors (209045418).

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

201443142 is a wasteful number, since it uses less digits than its factorization.

201443142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633527.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 201443142 is about 14193.0666876472. The cubic root of 201443142 is about 586.2067688914.

Adding to 201443142 its reverse (241344102), we get a palindrome (442787244).

The spelling of 201443142 in words is "two hundred one million, four hundred forty-three thousand, one hundred forty-two".