1282091 has 4 divisors (see below), whose sum is σ = 1298400. Its totient is φ = 1265784.

The previous prime is 1282081. The next prime is 1282093. The reversal of 1282091 is 1902821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1902821 = 397 ⋅4793.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1282091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1282093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8036 + ... + 8193.

It is an arithmetic number, because the mean of its divisors is an integer number (324600).

2^1282091 is an apocalyptic number.

1282091 is a deficient number, since it is larger than the sum of its proper divisors (16309).

1282091 is an equidigital number, since it uses as much as digits as its factorization.

1282091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16308.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1282091 is about 1132.2945729800. The cubic root of 1282091 is about 108.6357959072.

The spelling of 1282091 in words is "one million, two hundred eighty-two thousand, ninety-one".