105243899 has 4 divisors (see below), whose sum is σ = 105276240. Its totient is φ = 105211560.

The previous prime is 105243893. The next prime is 105243911. The reversal of 105243899 is 998342501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105243899 is a prime.

It is a super-2 number, since 2×105243899² = 22152556553444402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105243893) 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, 10664 + ... + 18005.

It is an arithmetic number, because the mean of its divisors is an integer number (26319060).

Almost surely, 2^105243899 is an apocalyptic number.

105243899 is a deficient number, since it is larger than the sum of its proper divisors (32341).

105243899 is an equidigital number, since it uses as much as digits as its factorization.

105243899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32340.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 105243899 is about 10258.8449154863. The cubic root of 105243899 is about 472.1343983716.

The spelling of 105243899 in words is "one hundred five million, two hundred forty-three thousand, eight hundred ninety-nine".