1286120368 has 40 divisors (see below), whose sum is σ = 2745966608. Its totient is φ = 579785472.

The previous prime is 1286120323. The next prime is 1286120377. The reversal of 1286120368 is 8630216821.

It is a happy number.

It is an unprimeable number.

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, 62955 + ... + 80842.

Almost surely, 2^1286120368 is an apocalyptic number.

It is an amenable number.

1286120368 is an abundant number, since it is smaller than the sum of its proper divisors (1459846240).

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

1286120368 is a wasteful number, since it uses less digits than its factorization.

1286120368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143861 (or 143855 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1286120368 is about 35862.5203799175. The cubic root of 1286120368 is about 1087.4948410025.

The spelling of 1286120368 in words is "one billion, two hundred eighty-six million, one hundred twenty thousand, three hundred sixty-eight".