1202004409 has 2 divisors, whose sum is σ = 1202004410.
Its totient is φ = 1202004408.
The previous prime is 1202004407. The next prime is 1202004457. The reversal of 1202004409 is 9044002021.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1027843600 + 174160809 = 32060^2 + 13197^2
It is a cyclic number.
It is not a de Polignac number, because 1202004409 - 21 = 1202004407 is a prime.
Together with 1202004407, it forms a pair of twin primes.
It is a self number, because there is not a number n which added to its sum of digits gives 1202004409.
It is not a weakly prime, because it can be changed into another prime (1202004407) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601002204 + 601002205.
It is an arithmetic number, because the mean of its divisors is an integer number (601002205).
Almost surely, 21202004409 is an apocalyptic number.
It is an amenable number.
1202004409 is a deficient number, since it is larger than the sum of its proper divisors (1).
1202004409 is an equidigital number, since it uses as much as digits as its factorization.
1202004409 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 576, while the sum is 22.
The square root of 1202004409 is about 34669.9352321287.
The cubic root of 1202004409 is about 1063.2499073926.
It can be divided in two parts, 120200 and 4409, that added together give a square (124609 = 3532).
The spelling of 1202004409 in words is "one billion, two hundred two million, four thousand, four hundred nine".