1240013 has 2 divisors, whose sum is σ = 1240014. Its totient is φ = 1240012.

The previous prime is 1240009. The next prime is 1240021. The reversal of 1240013 is 3100421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 813604 + 426409 = 902^2 + 653^2 .

It is an emirp because it is prime and its reverse (3100421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240013 - 2² = 1240009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1239976 and 1240003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620006 + 620007.

It is an arithmetic number, because the mean of its divisors is an integer number (620007).

2^1240013 is an apocalyptic number.

It is an amenable number.

1240013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240013 is an equidigital number, since it uses as much as digits as its factorization.

1240013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1240013 is about 1113.5587097230. The cubic root of 1240013 is about 107.4340825380.

Adding to 1240013 its reverse (3100421), we get a palindrome (4340434).

The spelling of 1240013 in words is "one million, two hundred forty thousand, thirteen".