1280026842 has 8 divisors (see below), whose sum is σ = 2560053696. Its totient is φ = 426675612.

The previous prime is 1280026831. The next prime is 1280026861. The reversal of 1280026842 is 2486200821.

It is a happy number.

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

1280026842 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106668898 + ... + 106668909.

It is an arithmetic number, because the mean of its divisors is an integer number (320006712).

Almost surely, 2^1280026842 is an apocalyptic number.

1280026842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1280026842 is a wasteful number, since it uses less digits than its factorization.

1280026842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213337812.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 1280026842 is about 35777.4627663841. The cubic root of 1280026842 is about 1085.7746362097.

The spelling of 1280026842 in words is "one billion, two hundred eighty million, twenty-six thousand, eight hundred forty-two".