1280023 has 2 divisors, whose sum is σ = 1280024. Its totient is φ = 1280022.

The previous prime is 1279997. The next prime is 1280101. The reversal of 1280023 is 3200821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1280023 - 2⁹ = 1279511 is a prime.

It is an Ulam number.

1280023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1279979 and 1280006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640011 + 640012.

It is an arithmetic number, because the mean of its divisors is an integer number (640012).

2^1280023 is an apocalyptic number.

1280023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280023 is an equidigital number, since it uses as much as digits as its factorization.

1280023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1280023 is about 1131.3810145128. The cubic root of 1280023 is about 108.5773549891.

Adding to 1280023 its reverse (3200821), we get a palindrome (4480844).

The spelling of 1280023 in words is "one million, two hundred eighty thousand, twenty-three".