1280010105 has 48 divisors (see below), whose sum is σ = 2453607936. Its totient is φ = 612092160.

The previous prime is 1280010101. The next prime is 1280010163. The reversal of 1280010105 is 5010100821.

It is not a de Polignac number, because 1280010105 - 2² = 1280010101 is a prime.

It is a super-2 number, since 2×1280010105² = 3276851737804222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1280010101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18424 + ... + 53846.

It is an arithmetic number, because the mean of its divisors is an integer number (51116832).

Almost surely, 2^1280010105 is an apocalyptic number.

1280010105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1280010105 is a deficient number, since it is larger than the sum of its proper divisors (1173597831).

1280010105 is a wasteful number, since it uses less digits than its factorization.

1280010105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35518 (or 35515 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1280010105 is about 35777.2288613861. The cubic root of 1280010105 is about 1085.7699038377.

Adding to 1280010105 its reverse (5010100821), we get a palindrome (6290110926).

The spelling of 1280010105 in words is "one billion, two hundred eighty million, ten thousand, one hundred five".