201045140 has 24 divisors (see below), whose sum is σ = 432493992. Its totient is φ = 78456320.

The previous prime is 201045113. The next prime is 201045209. The reversal of 201045140 is 41540102.

It can be written as a sum of positive squares in 4 ways, for example, as 17875984 + 183169156 = 4228^2 + 13534^2 .

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, 121769 + ... + 123408.

It is an arithmetic number, because the mean of its divisors is an integer number (18020583).

Almost surely, 2^201045140 is an apocalyptic number.

201045140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201045140 is an abundant number, since it is smaller than the sum of its proper divisors (231448852).

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

201045140 is a wasteful number, since it uses less digits than its factorization.

201045140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245227 (or 245225 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 201045140 is about 14179.0387544431. The cubic root of 201045140 is about 585.8204476557.

Adding to 201045140 its reverse (41540102), we get a palindrome (242585242).

The spelling of 201045140 in words is "two hundred one million, forty-five thousand, one hundred forty".