1142787487 has 2 divisors, whose sum is σ = 1142787488. Its totient is φ = 1142787486.

The previous prime is 1142787467. The next prime is 1142787491. The reversal of 1142787487 is 7847872411.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7847872411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142787487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142787487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142787467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571393743 + 571393744.

It is an arithmetic number, because the mean of its divisors is an integer number (571393744).

Almost surely, 2^1142787487 is an apocalyptic number.

1142787487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142787487 is an equidigital number, since it uses as much as digits as its factorization.

1142787487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 702464, while the sum is 49.

The square root of 1142787487 is about 33805.1399494219. The cubic root of 1142787487 is about 1045.4946757116.

The spelling of 1142787487 in words is "one billion, one hundred forty-two million, seven hundred eighty-seven thousand, four hundred eighty-seven".