210135 has 8 divisors (see below), whose sum is σ = 336240. Its totient is φ = 112064.

The previous prime is 210131. The next prime is 210139. The reversal of 210135 is 531012.

210135 = 203² + 204² + ... + 207².

It is an interprime number because it is at equal distance from previous prime (210131) and next prime (210139).

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

It is a cyclic number.

It is not a de Polignac number, because 210135 - 2² = 210131 is a prime.

210135 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 210135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6990 + ... + 7019.

It is an arithmetic number, because the mean of its divisors is an integer number (42030).

2²¹⁰¹³⁵ is an apocalyptic number.

210135 is a deficient number, since it is larger than the sum of its proper divisors (126105).

210135 is a wasteful number, since it uses less digits than its factorization.

210135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14017.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 210135 is about 458.4048429064. The cubic root of 210135 is about 59.4519537749.

Adding to 210135 its reverse (531012), we get a palindrome (741147).

The spelling of 210135 in words is "two hundred ten thousand, one hundred thirty-five".