1240511 has 2 divisors, whose sum is σ = 1240512. Its totient is φ = 1240510.

The previous prime is 1240487. The next prime is 1240517. The reversal of 1240511 is 1150421.

It is a strong prime.

It is an emirp because it is prime and its reverse (1150421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240511 is a prime.

It is a super-2 number, since 2×1240511² = 3077735082242, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620255 + 620256.

It is an arithmetic number, because the mean of its divisors is an integer number (620256).

2^1240511 is an apocalyptic number.

1240511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240511 is an equidigital number, since it uses as much as digits as its factorization.

1240511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1240511 is about 1113.7822947057. The cubic root of 1240511 is about 107.4484627669.

Adding to 1240511 its reverse (1150421), we get a palindrome (2390932).

The spelling of 1240511 in words is "one million, two hundred forty thousand, five hundred eleven".