206042940 has 120 divisors (see below), whose sum is σ = 650699280. Its totient is φ = 54577152.

The previous prime is 206042939. The next prime is 206043001. The reversal of 206042940 is 49240602.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 312331 + ... + 312989.

It is an arithmetic number, because the mean of its divisors is an integer number (5422494).

Almost surely, 2^206042940 is an apocalyptic number.

206042940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206042940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325349640).

206042940 is an abundant number, since it is smaller than the sum of its proper divisors (444656340).

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

206042940 is a wasteful number, since it uses less digits than its factorization.

206042940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 206042940 is about 14354.1959022441. The cubic root of 206042940 is about 590.6350912864.

The spelling of 206042940 in words is "two hundred six million, forty-two thousand, nine hundred forty".