209042083 has 16 divisors (see below), whose sum is σ = 219340800. Its totient is φ = 199000800.

The previous prime is 209042069. The next prime is 209042089. The reversal of 209042083 is 380240902.

It is a cyclic number.

It is not a de Polignac number, because 209042083 - 2²¹ = 206944931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209042089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771238 + ... + 771508.

It is an arithmetic number, because the mean of its divisors is an integer number (13708800).

Almost surely, 2^209042083 is an apocalyptic number.

209042083 is a deficient number, since it is larger than the sum of its proper divisors (10298717).

209042083 is a wasteful number, since it uses less digits than its factorization.

209042083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 209042083 is about 14458.2876925312. The cubic root of 209042083 is about 593.4870423703.

Adding to 209042083 its reverse (380240902), we get a palindrome (589282985).

The spelling of 209042083 in words is "two hundred nine million, forty-two thousand, eighty-three".