1280013 has 8 divisors (see below), whose sum is σ = 1950528. Its totient is φ = 731424.

The previous prime is 1279997. The next prime is 1280023. The reversal of 1280013 is 3100821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1280013 - 2⁴ = 1279997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1279974 and 1280001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30456 + ... + 30497.

It is an arithmetic number, because the mean of its divisors is an integer number (243816).

2^1280013 is an apocalyptic number.

It is an amenable number.

1280013 is a deficient number, since it is larger than the sum of its proper divisors (670515).

1280013 is an equidigital number, since it uses as much as digits as its factorization.

1280013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60963.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1280013 is about 1131.3765951265. The cubic root of 1280013 is about 108.5770722399.

Adding to 1280013 its reverse (3100821), we get a palindrome (4380834).

The spelling of 1280013 in words is "one million, two hundred eighty thousand, thirteen".