1281159 has 12 divisors (see below), whose sum is σ = 2018952. Its totient is φ = 776400.

The previous prime is 1281157. The next prime is 1281167. The reversal of 1281159 is 9511821.

It is not a de Polignac number, because 1281159 - 2¹ = 1281157 is a prime.

1281159 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6372 + ... + 6569.

It is an arithmetic number, because the mean of its divisors is an integer number (168246).

2^1281159 is an apocalyptic number.

1281159 is a deficient number, since it is larger than the sum of its proper divisors (737793).

1281159 is a wasteful number, since it uses less digits than its factorization.

1281159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12958 (or 12955 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 1281159 is about 1131.8829444779. The cubic root of 1281159 is about 108.6094657154.

The spelling of 1281159 in words is "one million, two hundred eighty-one thousand, one hundred fifty-nine".