101242447 has 2 divisors, whose sum is σ = 101242448. Its totient is φ = 101242446.

The previous prime is 101242441. The next prime is 101242499. The reversal of 101242447 is 744242101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101242447 - 2³ = 101242439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101242441) 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, 50621223 + 50621224.

It is an arithmetic number, because the mean of its divisors is an integer number (50621224).

Almost surely, 2^101242447 is an apocalyptic number.

101242447 is a deficient number, since it is larger than the sum of its proper divisors (1).

101242447 is an equidigital number, since it uses as much as digits as its factorization.

101242447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 101242447 is about 10061.9305801620. The cubic root of 101242447 is about 466.0732860112.

Adding to 101242447 its reverse (744242101), we get a palindrome (845484548).

The spelling of 101242447 in words is "one hundred one million, two hundred forty-two thousand, four hundred forty-seven".