1274240159 has 2 divisors, whose sum is σ = 1274240160. Its totient is φ = 1274240158.

The previous prime is 1274240131. The next prime is 1274240161. The reversal of 1274240159 is 9510424721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1274240159 - 2¹⁶ = 1274174623 is a prime.

Together with 1274240161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1274240119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637120079 + 637120080.

It is an arithmetic number, because the mean of its divisors is an integer number (637120080).

Almost surely, 2^1274240159 is an apocalyptic number.

1274240159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274240159 is an equidigital number, since it uses as much as digits as its factorization.

1274240159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1274240159 is about 35696.5006548261. The cubic root of 1274240159 is about 1084.1359920592.

The spelling of 1274240159 in words is "one billion, two hundred seventy-four million, two hundred forty thousand, one hundred fifty-nine".