1142495887 has 8 divisors (see below), whose sum is σ = 1233078896. Its totient is φ = 1052298432.

The previous prime is 1142495869. The next prime is 1142495899. The reversal of 1142495887 is 7885942411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142495887 - 2²³ = 1134107279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142495887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142495807) 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, 90213 + ... + 102094.

It is an arithmetic number, because the mean of its divisors is an integer number (154134862).

Almost surely, 2^1142495887 is an apocalyptic number.

1142495887 is a deficient number, since it is larger than the sum of its proper divisors (90583009).

1142495887 is a wasteful number, since it uses less digits than its factorization.

1142495887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192777.

The product of its digits is 645120, while the sum is 49.

The square root of 1142495887 is about 33800.8267206588. The cubic root of 1142495887 is about 1045.4057434049.

The spelling of 1142495887 in words is "one billion, one hundred forty-two million, four hundred ninety-five thousand, eight hundred eighty-seven".