105445240 has 32 divisors (see below), whose sum is σ = 237782880. Its totient is φ = 42083712.

The previous prime is 105445217. The next prime is 105445243. The reversal of 105445240 is 42544501.

It is a happy number.

It is a super-2 number, since 2×105445240² = 22237397277315200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105445243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16774 + ... + 22186.

It is an arithmetic number, because the mean of its divisors is an integer number (7430715).

Almost surely, 2^105445240 is an apocalyptic number.

105445240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105445240 is an abundant number, since it is smaller than the sum of its proper divisors (132337640).

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

105445240 is a wasteful number, since it uses less digits than its factorization.

105445240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911 (or 5907 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 105445240 is about 10268.6532709991. The cubic root of 105445240 is about 472.4352850349.

Adding to 105445240 its reverse (42544501), we get a palindrome (147989741).

The spelling of 105445240 in words is "one hundred five million, four hundred forty-five thousand, two hundred forty".