1280422603 has 4 divisors (see below), whose sum is σ = 1280534688. Its totient is φ = 1280310520.

The previous prime is 1280422571. The next prime is 1280422607. The reversal of 1280422603 is 3062240821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1280422603 - 2⁵ = 1280422571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1280422607) 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, 36676 + ... + 62497.

It is an arithmetic number, because the mean of its divisors is an integer number (320133672).

Almost surely, 2^1280422603 is an apocalyptic number.

1280422603 is a deficient number, since it is larger than the sum of its proper divisors (112085).

1280422603 is an equidigital number, since it uses as much as digits as its factorization.

1280422603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112084.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1280422603 is about 35782.9932090651. The cubic root of 1280422603 is about 1085.8865252637.

The spelling of 1280422603 in words is "one billion, two hundred eighty million, four hundred twenty-two thousand, six hundred three".