101042287 has 2 divisors, whose sum is σ = 101042288. Its totient is φ = 101042286.

The previous prime is 101042257. The next prime is 101042311. The reversal of 101042287 is 782240101.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (782240101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101042287 - 2²³ = 92653679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101042257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50521143 + 50521144.

It is an arithmetic number, because the mean of its divisors is an integer number (50521144).

Almost surely, 2^101042287 is an apocalyptic number.

101042287 is a deficient number, since it is larger than the sum of its proper divisors (1).

101042287 is an equidigital number, since it uses as much as digits as its factorization.

101042287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 101042287 is about 10051.9792578377. The cubic root of 101042287 is about 465.7659354284.

Adding to 101042287 its reverse (782240101), we get a palindrome (883282388).

The spelling of 101042287 in words is "one hundred one million, forty-two thousand, two hundred eighty-seven".