1281361 has 8 divisors (see below), whose sum is σ = 1324800. Its totient is φ = 1238688.

The previous prime is 1281349. The next prime is 1281367. The reversal of 1281361 is 1631821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1281361 - 2¹⁵ = 1248593 is a prime.

It is a Duffinian number.

1281361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1281367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6340 + ... + 6538.

It is an arithmetic number, because the mean of its divisors is an integer number (165600).

2^1281361 is an apocalyptic number.

It is an amenable number.

1281361 is a deficient number, since it is larger than the sum of its proper divisors (43439).

1281361 is a wasteful number, since it uses less digits than its factorization.

1281361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383.

The product of its digits is 288, while the sum is 22.

The square root of 1281361 is about 1131.9721728028. The cubic root of 1281361 is about 108.6151735574.

The spelling of 1281361 in words is "one million, two hundred eighty-one thousand, three hundred sixty-one".