101142787 has 2 divisors, whose sum is σ = 101142788. Its totient is φ = 101142786.

The previous prime is 101142781. The next prime is 101142803. The reversal of 101142787 is 787241101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101142787 - 2³ = 101142779 is a prime.

It is not a weakly prime, because it can be changed into another prime (101142781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50571393 + 50571394.

It is an arithmetic number, because the mean of its divisors is an integer number (50571394).

Almost surely, 2^101142787 is an apocalyptic number.

101142787 is a deficient number, since it is larger than the sum of its proper divisors (1).

101142787 is an equidigital number, since it uses as much as digits as its factorization.

101142787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 101142787 is about 10056.9770308975. The cubic root of 101142787 is about 465.9203063262.

Adding to 101142787 its reverse (787241101), we get a palindrome (888383888).

The spelling of 101142787 in words is "one hundred one million, one hundred forty-two thousand, seven hundred eighty-seven".