1248791 has 4 divisors (see below), whose sum is σ = 1258752. Its totient is φ = 1238832.

The previous prime is 1248781. The next prime is 1248799. The reversal of 1248791 is 1978421.

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 1248791 - 2¹⁰ = 1247767 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 (1248799) 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, 4790 + ... + 5043.

It is an arithmetic number, because the mean of its divisors is an integer number (314688).

2^1248791 is an apocalyptic number.

1248791 is a deficient number, since it is larger than the sum of its proper divisors (9961).

1248791 is an equidigital number, since it uses as much as digits as its factorization.

1248791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9960.

The product of its digits is 4032, while the sum is 32.

The square root of 1248791 is about 1117.4931767129. The cubic root of 1248791 is about 107.6869938116.

The spelling of 1248791 in words is "one million, two hundred forty-eight thousand, seven hundred ninety-one".