202045 has 8 divisors (see below), whose sum is σ = 256824. Its totient is φ = 152064.

The previous prime is 202031. The next prime is 202049. The reversal of 202045 is 540202.

202045 = T₁₉₆ + T₁₉₇ + ... + T₂₀₅.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33124 + 168921 = 182^2 + 411^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202045 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202049) 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, 1104 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (32103).

2²⁰²⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

202045 is a deficient number, since it is larger than the sum of its proper divisors (54779).

202045 is a wasteful number, since it uses less digits than its factorization.

202045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 202045 is about 449.4941601400. The cubic root of 202045 is about 58.6789997889.

Adding to 202045 its reverse (540202), we get a palindrome (742247).

The spelling of 202045 in words is "two hundred two thousand, forty-five".