204140145 has 16 divisors (see below), whose sum is σ = 356317632. Its totient is φ = 98976960.

The previous prime is 204140119. The next prime is 204140171. The reversal of 204140145 is 541041402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (204140119) and next prime (204140171).

It is not a de Polignac number, because 204140145 - 2⁵ = 204140113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618442 + ... + 618771.

It is an arithmetic number, because the mean of its divisors is an integer number (22269852).

Almost surely, 2^204140145 is an apocalyptic number.

It is an amenable number.

204140145 is a deficient number, since it is larger than the sum of its proper divisors (152177487).

204140145 is a wasteful number, since it uses less digits than its factorization.

204140145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237232.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 204140145 is about 14287.7620710873. The cubic root of 204140145 is about 588.8113048707.

Adding to 204140145 its reverse (541041402), we get a palindrome (745181547).

The spelling of 204140145 in words is "two hundred four million, one hundred forty thousand, one hundred forty-five".