204140019 has 16 divisors (see below), whose sum is σ = 293817600. Its totient is φ = 125686176.

The previous prime is 204140017. The next prime is 204140023. The reversal of 204140019 is 910041402.

It is not a de Polignac number, because 204140019 - 2¹ = 204140017 is a prime.

It is a super-2 number, since 2×204140019² = 83346294714640722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204139977 and 204140004.

It is not an unprimeable number, because it can be changed into a prime (204140011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49009 + ... + 53010.

It is an arithmetic number, because the mean of its divisors is an integer number (18363600).

Almost surely, 2^204140019 is an apocalyptic number.

204140019 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

204140019 is a deficient number, since it is larger than the sum of its proper divisors (89677581).

204140019 is a wasteful number, since it uses less digits than its factorization.

204140019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102074.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 204140019 is about 14287.7576617187. The cubic root of 204140019 is about 588.8111837281.

The spelling of 204140019 in words is "two hundred four million, one hundred forty thousand, nineteen".