1345281 has 24 divisors (see below), whose sum is σ = 2166720. Its totient is φ = 726432.

The previous prime is 1345277. The next prime is 1345297. The reversal of 1345281 is 1825431.

It is not a de Polignac number, because 1345281 - 2² = 1345277 is a prime.

It is a super-2 number, since 2×1345281² = 3619561937922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28600 + ... + 28646.

It is an arithmetic number, because the mean of its divisors is an integer number (90280).

2^1345281 is an apocalyptic number.

It is an amenable number.

1345281 is a deficient number, since it is larger than the sum of its proper divisors (821439).

1345281 is an equidigital number, since it uses as much as digits as its factorization.

1345281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 86 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 1345281 is about 1159.8624918498. The cubic root of 1345281 is about 110.3920172499.

The spelling of 1345281 in words is "one million, three hundred forty-five thousand, two hundred eighty-one".