1142897587 has 8 divisors (see below), whose sum is σ = 1237259520. Its totient is φ = 1049456640.

The previous prime is 1142897537. The next prime is 1142897593. The reversal of 1142897587 is 7857982411.

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 1142897587 - 2²³ = 1134508979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142897527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227662 + ... + 232627.

It is an arithmetic number, because the mean of its divisors is an integer number (154657440).

Almost surely, 2^1142897587 is an apocalyptic number.

1142897587 is a deficient number, since it is larger than the sum of its proper divisors (94361933).

1142897587 is a wasteful number, since it uses less digits than its factorization.

1142897587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460493.

The product of its digits is 1128960, while the sum is 52.

The square root of 1142897587 is about 33806.7683607883. The cubic root of 1142897587 is about 1045.5282501275.

The spelling of 1142897587 in words is "one billion, one hundred forty-two million, eight hundred ninety-seven thousand, five hundred eighty-seven".