1240159 has 2 divisors, whose sum is σ = 1240160. Its totient is φ = 1240158.

The previous prime is 1240153. The next prime is 1240181. The reversal of 1240159 is 9510421.

It is an a-pointer prime, because the next prime (1240181) can be obtained adding 1240159 to its sum of digits (22).

It is a weak prime.

It is an emirp because it is prime and its reverse (9510421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240159 is a prime.

1240159 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240153) 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, 620079 + 620080.

It is an arithmetic number, because the mean of its divisors is an integer number (620080).

2^1240159 is an apocalyptic number.

1240159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240159 is an equidigital number, since it uses as much as digits as its factorization.

1240159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1240159 is about 1113.6242633851. The cubic root of 1240159 is about 107.4382988272.

The spelling of 1240159 in words is "one million, two hundred forty thousand, one hundred fifty-nine".