204212045 has 8 divisors (see below), whose sum is σ = 247303320. Its totient is φ = 161870400.

The previous prime is 204212033. The next prime is 204212051. The reversal of 204212045 is 540212402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91278916 + 112933129 = 9554^2 + 10627^2 .

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

It is not a de Polignac number, because 204212045 - 2¹⁴ = 204195661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186806 + ... + 187895.

It is an arithmetic number, because the mean of its divisors is an integer number (30912915).

Almost surely, 2^204212045 is an apocalyptic number.

It is an amenable number.

204212045 is a deficient number, since it is larger than the sum of its proper divisors (43091275).

204212045 is a wasteful number, since it uses less digits than its factorization.

204212045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374815.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 204212045 is about 14290.2779888986. The cubic root of 204212045 is about 588.8804249736.

Adding to 204212045 its reverse (540212402), we get a palindrome (744424447).

The spelling of 204212045 in words is "two hundred four million, two hundred twelve thousand, forty-five".