1102040209 has 2 divisors, whose sum is σ = 1102040210. Its totient is φ = 1102040208.

The previous prime is 1102040201. The next prime is 1102040237. The reversal of 1102040209 is 9020402011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708890625 + 393149584 = 26625^2 + 19828^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102040209 - 2³ = 1102040201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1102040201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551020104 + 551020105.

It is an arithmetic number, because the mean of its divisors is an integer number (551020105).

Almost surely, 2^1102040209 is an apocalyptic number.

It is an amenable number.

1102040209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102040209 is an equidigital number, since it uses as much as digits as its factorization.

1102040209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1102040209 is about 33196.9909630376. The cubic root of 1102040209 is about 1032.9179234734.

The spelling of 1102040209 in words is "one billion, one hundred two million, forty thousand, two hundred nine".