210106 has 8 divisors (see below), whose sum is σ = 339444. Its totient is φ = 96960.

The previous prime is 210101. The next prime is 210109. The reversal of 210106 is 601012.

It can be written as a sum of positive squares in 2 ways, for example, as 194481 + 15625 = 441^2 + 125^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 210092 and 210101.

It is not an unprimeable number, because it can be changed into a prime (210101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4015 + ... + 4066.

2²¹⁰¹⁰⁶ is an apocalyptic number.

210106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

210106 is a deficient number, since it is larger than the sum of its proper divisors (129338).

210106 is a wasteful number, since it uses less digits than its factorization.

210106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 210106 is about 458.3732103865. The cubic root of 210106 is about 59.4492187300.

Adding to 210106 its reverse (601012), we get a palindrome (811118).

The spelling of 210106 in words is "two hundred ten thousand, one hundred six".