1149281 has 4 divisors (see below), whose sum is σ = 1313472. Its totient is φ = 985092.

The previous prime is 1149259. The next prime is 1149283. The reversal of 1149281 is 1829411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1829411 = 503 ⋅3637.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1149281 is a prime.

It is a super-2 number, since 2×1149281² = 2641693633922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1149281.

It is not an unprimeable number, because it can be changed into a prime (1149283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82085 + ... + 82098.

It is an arithmetic number, because the mean of its divisors is an integer number (328368).

2^1149281 is an apocalyptic number.

It is an amenable number.

1149281 is a deficient number, since it is larger than the sum of its proper divisors (164191).

1149281 is an equidigital number, since it uses as much as digits as its factorization.

1149281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164190.

The product of its digits is 576, while the sum is 26.

The square root of 1149281 is about 1072.0452415826. The cubic root of 1149281 is about 104.7471163075.

The spelling of 1149281 in words is "one million, one hundred forty-nine thousand, two hundred eighty-one".