206043140 has 12 divisors (see below), whose sum is σ = 432690636. Its totient is φ = 82417248.

The previous prime is 206043137. The next prime is 206043161. The reversal of 206043140 is 41340602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53816896 + 152226244 = 7336^2 + 12338^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10302157 = 206043140 / (2 + 0 + 6 + 0 + 4 + 3 + 1 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5151059 + ... + 5151098.

It is an arithmetic number, because the mean of its divisors is an integer number (36057553).

Almost surely, 2^206043140 is an apocalyptic number.

206043140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206043140 is an abundant number, since it is smaller than the sum of its proper divisors (226647496).

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

206043140 is a wasteful number, since it uses less digits than its factorization.

206043140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10302166 (or 10302164 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 206043140 is about 14354.2028688465. The cubic root of 206043140 is about 590.6352823905.

Adding to 206043140 its reverse (41340602), we get a palindrome (247383742).

The spelling of 206043140 in words is "two hundred six million, forty-three thousand, one hundred forty".