210147 has 8 divisors (see below), whose sum is σ = 320256. Its totient is φ = 120072.

The previous prime is 210143. The next prime is 210157. The reversal of 210147 is 741012.

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

It is not a de Polignac number, because 210147 - 2² = 210143 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

210147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (210143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4983 + ... + 5024.

It is an arithmetic number, because the mean of its divisors is an integer number (40032).

210147 is a Friedman number, since it can be written as 21*(10^4+7), using all its digits and the basic arithmetic operations.

2²¹⁰¹⁴⁷ is an apocalyptic number.

210147 is a deficient number, since it is larger than the sum of its proper divisors (110109).

210147 is a wasteful number, since it uses less digits than its factorization.

210147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10017.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 210147 is about 458.4179315865. The cubic root of 210147 is about 59.4530854440.

Adding to 210147 its reverse (741012), we get a palindrome (951159).

The spelling of 210147 in words is "two hundred ten thousand, one hundred forty-seven", and thus it is an iban number.