1281874 has 12 divisors (see below), whose sum is σ = 2113902. Its totient is φ = 582560.

The previous prime is 1281871. The next prime is 1281883. The reversal of 1281874 is 4781821.

It can be written as a sum of positive squares in only one way, i.e., 915849 + 366025 = 957^2 + 605^2 .

It is not an unprimeable number, because it can be changed into a prime (1281871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2407 + ... + 2890.

2^1281874 is an apocalyptic number.

1281874 is a deficient number, since it is larger than the sum of its proper divisors (832028).

1281874 is a wasteful number, since it uses less digits than its factorization.

1281874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321 (or 5310 counting only the distinct ones).

The product of its digits is 3584, while the sum is 31.

The square root of 1281874 is about 1132.1987458039. The cubic root of 1281874 is about 108.6296665196.

It can be divided in two parts, 128 and 1874, that added together give a palindrome (2002).

The spelling of 1281874 in words is "one million, two hundred eighty-one thousand, eight hundred seventy-four".