202147 has 16 divisors (see below), whose sum is σ = 248832. Its totient is φ = 161920.

The previous prime is 202129. The next prime is 202183. The reversal of 202147 is 741202.

202147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-202147 is a prime.

It is an Ulam number.

It is a Duffinian number.

202147 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 202147.

It is not an unprimeable number, because it can be changed into a prime (202127) 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, 4278 + ... + 4324.

It is an arithmetic number, because the mean of its divisors is an integer number (15552).

2²⁰²¹⁴⁷ is an apocalyptic number.

202147 is a deficient number, since it is larger than the sum of its proper divisors (46685).

202147 is a wasteful number, since it uses less digits than its factorization.

202147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 202147 is about 449.6076066972. The cubic root of 202147 is about 58.6888725912.

Adding to 202147 its reverse (741202), we get a palindrome (943349).

The spelling of 202147 in words is "two hundred two thousand, one hundred forty-seven", and thus it is an iban number.