1280000122 has 16 divisors (see below), whose sum is σ = 1935260352. Its totient is φ = 634924800.

The previous prime is 1280000101. The next prime is 1280000129. The reversal of 1280000122 is 2210000821.

It is a junction number, because it is equal to n+sod(n) for n = 1280000096 and 1280000105.

It is not an unprimeable number, because it can be changed into a prime (1280000129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271578 + ... + 276250.

It is an arithmetic number, because the mean of its divisors is an integer number (120953772).

Almost surely, 2^1280000122 is an apocalyptic number.

1280000122 is a deficient number, since it is larger than the sum of its proper divisors (655260230).

1280000122 is a wasteful number, since it uses less digits than its factorization.

1280000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5733.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1280000122 is about 35777.0893449984. The cubic root of 1280000122 is about 1085.7670811337.

Adding to 1280000122 its reverse (2210000821), we get a palindrome (3490000943).

The spelling of 1280000122 in words is "one billion, two hundred eighty million, one hundred twenty-two", and thus it is an aban number.