105523420 has 24 divisors (see below), whose sum is σ = 234635184. Its totient is φ = 39726336.

The previous prime is 105523409. The next prime is 105523423. The reversal of 105523420 is 24325501.

It is a super-2 number, since 2×105523420² = 22270384336992800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105523391 and 105523400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105523423) 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, 154842 + ... + 155521.

It is an arithmetic number, because the mean of its divisors is an integer number (9776466).

Almost surely, 2^105523420 is an apocalyptic number.

105523420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105523420 is an abundant number, since it is smaller than the sum of its proper divisors (129111764).

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

105523420 is a wasteful number, since it uses less digits than its factorization.

105523420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310389 (or 310387 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 105523420 is about 10272.4592965852. The cubic root of 105523420 is about 472.5520150272.

Adding to 105523420 its reverse (24325501), we get a palindrome (129848921).

The spelling of 105523420 in words is "one hundred five million, five hundred twenty-three thousand, four hundred twenty".