1202009 has 2 divisors, whose sum is σ = 1202010. Its totient is φ = 1202008.

The previous prime is 1201999. The next prime is 1202017. The reversal of 1202009 is 9002021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 120409 = 1040^2 + 347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202009 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201984 and 1202002.

It is not a weakly prime, because it can be changed into another prime (1202029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601004 + 601005.

It is an arithmetic number, because the mean of its divisors is an integer number (601005).

2^1202009 is an apocalyptic number.

It is an amenable number.

1202009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202009 is an equidigital number, since it uses as much as digits as its factorization.

1202009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1202009 is about 1096.3617103858. The cubic root of 1202009 is about 106.3251261069.

The spelling of 1202009 in words is "one million, two hundred two thousand, nine".