1200791 has 4 divisors (see below), whose sum is σ = 1209000. Its totient is φ = 1192584.

The previous prime is 1200779. The next prime is 1200799. The reversal of 1200791 is 1970021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1970021 = 443 ⋅4447.

It is a cyclic number.

It is not a de Polignac number, because 1200791 - 2¹⁰ = 1199767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200799) 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, 3881 + ... + 4178.

It is an arithmetic number, because the mean of its divisors is an integer number (302250).

2^1200791 is an apocalyptic number.

1200791 is a deficient number, since it is larger than the sum of its proper divisors (8209).

1200791 is an equidigital number, since it uses as much as digits as its factorization.

1200791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8208.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 1200791 is about 1095.8060959860. The cubic root of 1200791 is about 106.2892007601.

It can be divided in two parts, 1200 and 791, that added together give a palindrome (1991).

The spelling of 1200791 in words is "one million, two hundred thousand, seven hundred ninety-one".