1288068742 has 4 divisors (see below), whose sum is σ = 1932103116. Its totient is φ = 644034370.

The previous prime is 1288068709. The next prime is 1288068773. The reversal of 1288068742 is 2478608821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1288068692 and 1288068701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322017184 + ... + 322017187.

It is an arithmetic number, because the mean of its divisors is an integer number (483025779).

Almost surely, 2^1288068742 is an apocalyptic number.

1288068742 is a deficient number, since it is larger than the sum of its proper divisors (644034374).

1288068742 is an equidigital number, since it uses as much as digits as its factorization.

1288068742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644034373.

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 1288068742 is about 35889.6745875468. The cubic root of 1288068742 is about 1088.0437210975.

The spelling of 1288068742 in words is "one billion, two hundred eighty-eight million, sixty-eight thousand, seven hundred forty-two".