105199247 has 4 divisors (see below), whose sum is σ = 111387456. Its totient is φ = 99011040.

The previous prime is 105199243. The next prime is 105199253. The reversal of 105199247 is 742991501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742991501 = 7 ⋅106141643.

It is a cyclic number.

It is not a de Polignac number, because 105199247 - 2² = 105199243 is a prime.

It is a super-2 number, since 2×105199247² = 22133763138734018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105199247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105199243) 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, 3094079 + ... + 3094112.

It is an arithmetic number, because the mean of its divisors is an integer number (27846864).

Almost surely, 2^105199247 is an apocalyptic number.

105199247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

105199247 is a deficient number, since it is larger than the sum of its proper divisors (6188209).

105199247 is an equidigital number, since it uses as much as digits as its factorization.

105199247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6188208.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 105199247 is about 10256.6684162061. The cubic root of 105199247 is about 472.0676178503.

The spelling of 105199247 in words is "one hundred five million, one hundred ninety-nine thousand, two hundred forty-seven".