201143146 has 8 divisors (see below), whose sum is σ = 303740100. Its totient is φ = 99896448.

The previous prime is 201143143. The next prime is 201143153. The reversal of 201143146 is 641341102.

It can be written as a sum of positive squares in 2 ways, for example, as 200930625 + 212521 = 14175^2 + 461^2 .

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

It is not an unprimeable number, because it can be changed into a prime (201143143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337191 + ... + 337786.

Almost surely, 2^201143146 is an apocalyptic number.

201143146 is a deficient number, since it is larger than the sum of its proper divisors (102596954).

201143146 is a wasteful number, since it uses less digits than its factorization.

201143146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675128.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 201143146 is about 14182.4943504307. The cubic root of 201143146 is about 585.9156246093.

Adding to 201143146 its reverse (641341102), we get a palindrome (842484248).

The spelling of 201143146 in words is "two hundred one million, one hundred forty-three thousand, one hundred forty-six".