1204204139 has 2 divisors, whose sum is σ = 1204204140. Its totient is φ = 1204204138.

The previous prime is 1204204093. The next prime is 1204204147. The reversal of 1204204139 is 9314024021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1204204139 - 2⁸ = 1204203883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1204204159) 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 as a sum of consecutive naturals, namely, 602102069 + 602102070.

It is an arithmetic number, because the mean of its divisors is an integer number (602102070).

Almost surely, 2^1204204139 is an apocalyptic number.

1204204139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204204139 is an equidigital number, since it uses as much as digits as its factorization.

1204204139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1204204139 is about 34701.6446152052. The cubic root of 1204204139 is about 1063.8981128411.

The spelling of 1204204139 in words is "one billion, two hundred four million, two hundred four thousand, one hundred thirty-nine".