105243906 has 64 divisors (see below), whose sum is σ = 235208448. Its totient is φ = 31223808.

The previous prime is 105243893. The next prime is 105243911. The reversal of 105243906 is 609342501.

It is a super-2 number, since 2×105243906² = 22152559500273672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264900 + ... + 265296.

It is an arithmetic number, because the mean of its divisors is an integer number (3675132).

Almost surely, 2^105243906 is an apocalyptic number.

105243906 is an abundant number, since it is smaller than the sum of its proper divisors (129964542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105243906 is a wasteful number, since it uses less digits than its factorization.

105243906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 105243906 is about 10258.8452566554. The cubic root of 105243906 is about 472.1344088392.

The spelling of 105243906 in words is "one hundred five million, two hundred forty-three thousand, nine hundred six".