100071247 has 4 divisors (see below), whose sum is σ = 101442160. Its totient is φ = 98700336.

The previous prime is 100071241. The next prime is 100071253. The reversal of 100071247 is 742170001.

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

It is an interprime number because it is at equal distance from previous prime (100071241) and next prime (100071253).

It is a cyclic number.

It is not a de Polignac number, because 100071247 - 2¹⁹ = 99546959 is a prime.

It is a super-2 number, since 2×100071247² = 20028508952270018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100071241) 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, 685347 + ... + 685492.

It is an arithmetic number, because the mean of its divisors is an integer number (25360540).

Almost surely, 2^100071247 is an apocalyptic number.

100071247 is a deficient number, since it is larger than the sum of its proper divisors (1370913).

100071247 is an equidigital number, since it uses as much as digits as its factorization.

100071247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370912.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 100071247 is about 10003.5617157091. The cubic root of 100071247 is about 464.2690902856.

The spelling of 100071247 in words is "one hundred million, seventy-one thousand, two hundred forty-seven".