1240791 has 4 divisors (see below), whose sum is σ = 1654392. Its totient is φ = 827192.

The previous prime is 1240777. The next prime is 1240793. The reversal of 1240791 is 1970421.

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 1240791 - 2¹⁵ = 1208023 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240793) 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, 206796 + ... + 206801.

It is an arithmetic number, because the mean of its divisors is an integer number (413598).

2^1240791 is an apocalyptic number.

1240791 is a deficient number, since it is larger than the sum of its proper divisors (413601).

1240791 is an equidigital number, since it uses as much as digits as its factorization.

1240791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413600.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1240791 is about 1113.9079854279. The cubic root of 1240791 is about 107.4565463459.

The spelling of 1240791 in words is "one million, two hundred forty thousand, seven hundred ninety-one".