101247 has 4 divisors (see below), whose sum is σ = 135000. Its totient is φ = 67496.

The previous prime is 101221. The next prime is 101267. The reversal of 101247 is 742101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101247 - 2⁶ = 101183 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16872 + ... + 16877.

It is an arithmetic number, because the mean of its divisors is an integer number (33750).

2¹⁰¹²⁴⁷ is an apocalyptic number.

101247 is a deficient number, since it is larger than the sum of its proper divisors (33753).

101247 is an equidigital number, since it uses as much as digits as its factorization.

101247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33752.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 101247 is about 318.1933374538. The cubic root of 101247 is about 46.6080272540.

Adding to 101247 its reverse (742101), we get a palindrome (843348).

The spelling of 101247 in words is "one hundred one thousand, two hundred forty-seven", and thus it is an iban number.