1191259 has 4 divisors (see below), whose sum is σ = 1197504. Its totient is φ = 1185016.

The previous prime is 1191247. The next prime is 1191277. The reversal of 1191259 is 9521911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1191259 - 2⁷ = 1191131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1191209) 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 in 3 ways as a sum of consecutive naturals, for example, 2827 + ... + 3220.

It is an arithmetic number, because the mean of its divisors is an integer number (299376).

2^1191259 is an apocalyptic number.

1191259 is a deficient number, since it is larger than the sum of its proper divisors (6245).

1191259 is an equidigital number, since it uses as much as digits as its factorization.

1191259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244.

The product of its digits is 810, while the sum is 28.

The square root of 1191259 is about 1091.4481206177. The cubic root of 1191259 is about 106.0072084809.

It can be divided in two parts, 119 and 1259, that added together give a triangular number (1378 = T₅₂).

The spelling of 1191259 in words is "one million, one hundred ninety-one thousand, two hundred fifty-nine".