204342545 has 16 divisors (see below), whose sum is σ = 276134400. Its totient is φ = 143817600.

The previous prime is 204342521. The next prime is 204342569. The reversal of 204342545 is 545243402.

It is an interprime number because it is at equal distance from previous prime (204342521) and next prime (204342569).

It is not a de Polignac number, because 204342545 - 2²⁰ = 203293969 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, 58220 + ... + 61629.

It is an arithmetic number, because the mean of its divisors is an integer number (17258400).

Almost surely, 2^204342545 is an apocalyptic number.

It is an amenable number.

204342545 is a deficient number, since it is larger than the sum of its proper divisors (71791855).

204342545 is a wasteful number, since it uses less digits than its factorization.

204342545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119896.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 204342545 is about 14294.8433009949. The cubic root of 204342545 is about 589.0058379667.

Adding to 204342545 its reverse (545243402), we get a palindrome (749585947).

The spelling of 204342545 in words is "two hundred four million, three hundred forty-two thousand, five hundred forty-five".