105304240 has 20 divisors (see below), whose sum is σ = 244832544. Its totient is φ = 42121664.

The previous prime is 105304237. The next prime is 105304259. The reversal of 105304240 is 42403501.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×105304240² = 22177965923955200, 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 3 ways as a sum of consecutive naturals, for example, 658072 + ... + 658231.

Almost surely, 2^105304240 is an apocalyptic number.

105304240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105304240 is an abundant number, since it is smaller than the sum of its proper divisors (139528304).

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

105304240 is a wasteful number, since it uses less digits than its factorization.

105304240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316316 (or 1316310 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 105304240 is about 10261.7854197016. The cubic root of 105304240 is about 472.2246130034.

Adding to 105304240 its reverse (42403501), we get a palindrome (147707741).

The spelling of 105304240 in words is "one hundred five million, three hundred four thousand, two hundred forty".