1142995855 has 8 divisors (see below), whose sum is σ = 1373049072. Its totient is φ = 913427328.

The previous prime is 1142995853. The next prime is 1142995877. The reversal of 1142995855 is 5585992411.

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 1142995855 - 2¹ = 1142995853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142995799 and 1142995808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142995853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115962 + ... + 125431.

It is an arithmetic number, because the mean of its divisors is an integer number (171631134).

Almost surely, 2^1142995855 is an apocalyptic number.

1142995855 is a deficient number, since it is larger than the sum of its proper divisors (230053217).

1142995855 is an equidigital number, since it uses as much as digits as its factorization.

1142995855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242345.

The product of its digits is 648000, while the sum is 49.

The square root of 1142995855 is about 33808.2217071528. The cubic root of 1142995855 is about 1045.5582146162.

The spelling of 1142995855 in words is "one billion, one hundred forty-two million, nine hundred ninety-five thousand, eight hundred fifty-five".