1288042278 has 8 divisors (see below), whose sum is σ = 2576084568. Its totient is φ = 429347424.

The previous prime is 1288042241. The next prime is 1288042303. The reversal of 1288042278 is 8722408821.

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

1288042278 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 107336851 + ... + 107336862.

It is an arithmetic number, because the mean of its divisors is an integer number (322010571).

Almost surely, 2^1288042278 is an apocalyptic number.

1288042278 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.

1288042278 is a wasteful number, since it uses less digits than its factorization.

1288042278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214673718.

The product of its (nonzero) digits is 114688, while the sum is 42.

The square root of 1288042278 is about 35889.3059002260. The cubic root of 1288042278 is about 1088.0362695837.

The spelling of 1288042278 in words is "one billion, two hundred eighty-eight million, forty-two thousand, two hundred seventy-eight".