1288042732 has 12 divisors (see below), whose sum is σ = 2255589000. Its totient is φ = 643588736.

The previous prime is 1288042703. The next prime is 1288042739. The reversal of 1288042732 is 2372408821.

It is a junction number, because it is equal to n+sod(n) for n = 1288042691 and 1288042700.

It is not an unprimeable number, because it can be changed into a prime (1288042739) by changing a digit.

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, 101413 + ... + 113404.

It is an arithmetic number, because the mean of its divisors is an integer number (187965750).

Almost surely, 2^1288042732 is an apocalyptic number.

It is an amenable number.

1288042732 is a deficient number, since it is larger than the sum of its proper divisors (967546268).

1288042732 is a wasteful number, since it uses less digits than its factorization.

1288042732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216320 (or 216318 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 1288042732 is about 35889.3122252294. The cubic root of 1288042732 is about 1088.0363974181.

The spelling of 1288042732 in words is "one billion, two hundred eighty-eight million, forty-two thousand, seven hundred thirty-two".