1281973 has 8 divisors (see below), whose sum is σ = 1598400. Its totient is φ = 998880.

The previous prime is 1281971. The next prime is 1281979. The reversal of 1281973 is 3791821.

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 1281973 - 2¹ = 1281971 is a prime.

It is a Duffinian number.

1281973 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8248 + ... + 8401.

It is an arithmetic number, because the mean of its divisors is an integer number (199800).

2^1281973 is an apocalyptic number.

It is an amenable number.

1281973 is a deficient number, since it is larger than the sum of its proper divisors (316427).

1281973 is a wasteful number, since it uses less digits than its factorization.

1281973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16667.

The product of its digits is 3024, while the sum is 31.

The square root of 1281973 is about 1132.2424651990. The cubic root of 1281973 is about 108.6324629619.

The spelling of 1281973 in words is "one million, two hundred eighty-one thousand, nine hundred seventy-three".