1206004091 has 2 divisors, whose sum is σ = 1206004092. Its totient is φ = 1206004090.

The previous prime is 1206004003. The next prime is 1206004117. The reversal of 1206004091 is 1904006021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1904006021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1206004091 - 2¹⁰ = 1206003067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1203004091) 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, 603002045 + 603002046.

It is an arithmetic number, because the mean of its divisors is an integer number (603002046).

Almost surely, 2^1206004091 is an apocalyptic number.

1206004091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206004091 is an equidigital number, since it uses as much as digits as its factorization.

1206004091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1206004091 is about 34727.5696097495. The cubic root of 1206004091 is about 1064.4279267243.

The spelling of 1206004091 in words is "one billion, two hundred six million, four thousand, ninety-one".