1240347 has 6 divisors (see below), whose sum is σ = 1656372. Its totient is φ = 825612.

The previous prime is 1240333. The next prime is 1240361. The reversal of 1240347 is 7430421.

It is an interprime number because it is at equal distance from previous prime (1240333) and next prime (1240361).

It is not a de Polignac number, because 1240347 - 2⁷ = 1240219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1608 + ... + 2250.

It is an arithmetic number, because the mean of its divisors is an integer number (276062).

2^1240347 is an apocalyptic number.

1240347 is a deficient number, since it is larger than the sum of its proper divisors (416025).

1240347 is an frugal number, since it uses more digits than its factorization.

1240347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 1240347 is about 1113.7086692668. The cubic root of 1240347 is about 107.4437275342.

Adding to 1240347 its reverse (7430421), we get a palindrome (8670768).

The spelling of 1240347 in words is "one million, two hundred forty thousand, three hundred forty-seven".