1142508287 has 4 divisors (see below), whose sum is σ = 1142703576. Its totient is φ = 1142313000.

The previous prime is 1142508271. The next prime is 1142508313. The reversal of 1142508287 is 7828052411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142508287 - 2⁴ = 1142508271 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 1142508287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142508217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88589 + ... + 100662.

It is an arithmetic number, because the mean of its divisors is an integer number (285675894).

Almost surely, 2^1142508287 is an apocalyptic number.

1142508287 is a deficient number, since it is larger than the sum of its proper divisors (195289).

1142508287 is an equidigital number, since it uses as much as digits as its factorization.

1142508287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195288.

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 1142508287 is about 33801.0101476272. The cubic root of 1142508287 is about 1045.4095254709.

The spelling of 1142508287 in words is "one billion, one hundred forty-two million, five hundred eight thousand, two hundred eighty-seven".