1142288785 has 8 divisors (see below), whose sum is σ = 1495359936. Its totient is φ = 830755440.

The previous prime is 1142288783. The next prime is 1142288821. The reversal of 1142288785 is 5878822411.

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

It is not a de Polignac number, because 1142288785 - 2¹ = 1142288783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142288783) by changing a digit.

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, 10384389 + ... + 10384498.

It is an arithmetic number, because the mean of its divisors is an integer number (186919992).

Almost surely, 2^1142288785 is an apocalyptic number.

It is an amenable number.

1142288785 is a deficient number, since it is larger than the sum of its proper divisors (353071151).

1142288785 is a wasteful number, since it uses less digits than its factorization.

1142288785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20768903.

The product of its digits is 286720, while the sum is 46.

The square root of 1142288785 is about 33797.7630176910. The cubic root of 1142288785 is about 1045.3425721480.

The spelling of 1142288785 in words is "one billion, one hundred forty-two million, two hundred eighty-eight thousand, seven hundred eighty-five".