105249245 has 8 divisors (see below), whose sum is σ = 127056384. Its totient is φ = 83694544.

The previous prime is 105249241. The next prime is 105249253. The reversal of 105249245 is 542942501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105249245 - 2² = 105249241 is a prime.

It is a super-2 number, since 2×105249245² = 22154807146140050, 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 (105249241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62189 + ... + 63858.

It is an arithmetic number, because the mean of its divisors is an integer number (15882048).

Almost surely, 2^105249245 is an apocalyptic number.

It is an amenable number.

105249245 is a deficient number, since it is larger than the sum of its proper divisors (21807139).

105249245 is a wasteful number, since it uses less digits than its factorization.

105249245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126219.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 105249245 is about 10259.1054678271. The cubic root of 105249245 is about 472.1423924621.

The spelling of 105249245 in words is "one hundred five million, two hundred forty-nine thousand, two hundred forty-five".