105544420 has 12 divisors (see below), whose sum is σ = 221643324. Its totient is φ = 42217760.

The previous prime is 105544391. The next prime is 105544423. The reversal of 105544420 is 24445501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34175716 + 71368704 = 5846^2 + 8448^2 .

It is a super-2 number, since 2×105544420² = 22279249186272800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105544423) 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, 2638591 + ... + 2638630.

It is an arithmetic number, because the mean of its divisors is an integer number (18470277).

Almost surely, 2^105544420 is an apocalyptic number.

105544420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105544420 is an abundant number, since it is smaller than the sum of its proper divisors (116098904).

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

105544420 is a wasteful number, since it uses less digits than its factorization.

105544420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277230 (or 5277228 counting only the distinct ones).

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

The square root of 105544420 is about 10273.4813962941. The cubic root of 105544420 is about 472.5833601513.

Adding to 105544420 its reverse (24445501), we get a palindrome (129989921).

The spelling of 105544420 in words is "one hundred five million, five hundred forty-four thousand, four hundred twenty".