1282945 has 4 divisors (see below), whose sum is σ = 1539540. Its totient is φ = 1026352.

The previous prime is 1282943. The next prime is 1282951. The reversal of 1282945 is 5492821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 419904 + 863041 = 648^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1282945 - 2¹ = 1282943 is a prime.

1282945 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1282943) 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, 128290 + ... + 128299.

It is an arithmetic number, because the mean of its divisors is an integer number (384885).

2^1282945 is an apocalyptic number.

It is an amenable number.

1282945 is a deficient number, since it is larger than the sum of its proper divisors (256595).

1282945 is an equidigital number, since it uses as much as digits as its factorization.

1282945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256594.

The product of its digits is 5760, while the sum is 31.

The square root of 1282945 is about 1132.6716205503. The cubic root of 1282945 is about 108.6599112984.

The spelling of 1282945 in words is "one million, two hundred eighty-two thousand, nine hundred forty-five".