1280447041 has 4 divisors (see below), whose sum is σ = 1285804800. Its totient is φ = 1275089284.

The previous prime is 1280447039. The next prime is 1280447057. The reversal of 1280447041 is 1407440821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1280447041 - 2¹ = 1280447039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1280446994 and 1280447012.

It is not an unprimeable number, because it can be changed into a prime (1280447081) 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, 2678521 + ... + 2678998.

It is an arithmetic number, because the mean of its divisors is an integer number (321451200).

Almost surely, 2^1280447041 is an apocalyptic number.

It is an amenable number.

1280447041 is a deficient number, since it is larger than the sum of its proper divisors (5357759).

1280447041 is an equidigital number, since it uses as much as digits as its factorization.

1280447041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357758.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 1280447041 is about 35783.3346825027. The cubic root of 1280447041 is about 1085.8934335886.

Adding to 1280447041 its reverse (1407440821), we get a palindrome (2687887862).

The spelling of 1280447041 in words is "one billion, two hundred eighty million, four hundred forty-seven thousand, forty-one".