202945 has 8 divisors (see below), whose sum is σ = 250344. Its totient is φ = 157824.

The previous prime is 202933. The next prime is 202949. The reversal of 202945 is 549202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36481 + 166464 = 191^2 + 408^2 .

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 202945 - 2⁷ = 202817 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (202949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (31293).

2²⁰²⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

202945 is a deficient number, since it is larger than the sum of its proper divisors (47399).

202945 is a wasteful number, since it uses less digits than its factorization.

202945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 202945 is about 450.4941731033. The cubic root of 202945 is about 58.7659983592.

The spelling of 202945 in words is "two hundred two thousand, nine hundred forty-five".