1288042285 has 16 divisors (see below), whose sum is σ = 1583110656. Its totient is φ = 1005587968.

The previous prime is 1288042241. The next prime is 1288042303. The reversal of 1288042285 is 5822408821.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288042285 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75192 + ... + 90718.

It is an arithmetic number, because the mean of its divisors is an integer number (98944416).

Almost surely, 2^1288042285 is an apocalyptic number.

It is an amenable number.

1288042285 is a deficient number, since it is larger than the sum of its proper divisors (295068371).

1288042285 is a wasteful number, since it uses less digits than its factorization.

1288042285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15932.

The product of its (nonzero) digits is 81920, while the sum is 40.

The square root of 1288042285 is about 35889.3059977481. The cubic root of 1288042285 is about 1088.0362715547.

The spelling of 1288042285 in words is "one billion, two hundred eighty-eight million, forty-two thousand, two hundred eighty-five".