1240751 has 2 divisors, whose sum is σ = 1240752. Its totient is φ = 1240750.

The previous prime is 1240741. The next prime is 1240763. The reversal of 1240751 is 1570421.

It is a weak prime.

It is an emirp because it is prime and its reverse (1570421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240751 - 2¹⁰ = 1239727 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620375 + 620376.

It is an arithmetic number, because the mean of its divisors is an integer number (620376).

2^1240751 is an apocalyptic number.

1240751 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240751 is an equidigital number, since it uses as much as digits as its factorization.

1240751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1240751 is about 1113.8900304788. The cubic root of 1240751 is about 107.4553916234.

It can be divided in two parts, 1240 and 751, that added together give a palindrome (1991).

The spelling of 1240751 in words is "one million, two hundred forty thousand, seven hundred fifty-one".