210942939 has 8 divisors (see below), whose sum is σ = 281439760. Its totient is φ = 140537376.

The previous prime is 210942937. The next prime is 210942943. The reversal of 210942939 is 939249012.

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

It is not a de Polignac number, because 210942939 - 2¹ = 210942937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210942897 and 210942906.

It is not an unprimeable number, because it can be changed into a prime (210942931) by changing a digit.

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, 17224 + ... + 26805.

It is an arithmetic number, because the mean of its divisors is an integer number (35179970).

Almost surely, 2^210942939 is an apocalyptic number.

210942939 is a deficient number, since it is larger than the sum of its proper divisors (70496821).

210942939 is a wasteful number, since it uses less digits than its factorization.

210942939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45629.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 210942939 is about 14523.8747929056. The cubic root of 210942939 is about 595.2805108141.

The spelling of 210942939 in words is "two hundred ten million, nine hundred forty-two thousand, nine hundred thirty-nine".