105503412 has 24 divisors (see below), whose sum is σ = 281342656. Its totient is φ = 30143808.

The previous prime is 105503407. The next prime is 105503449. The reversal of 105503412 is 214305501.

It is a super-2 number, since 2×105503412² = 22261939887283488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627913 + ... + 628080.

Almost surely, 2^105503412 is an apocalyptic number.

105503412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

105503412 is an abundant number, since it is smaller than the sum of its proper divisors (175839244).

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

105503412 is a wasteful number, since it uses less digits than its factorization.

105503412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256007 (or 1256005 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 105503412 is about 10271.4853843054. The cubic root of 105503412 is about 472.5221467182.

Adding to 105503412 its reverse (214305501), we get a palindrome (319808913).

The spelling of 105503412 in words is "one hundred five million, five hundred three thousand, four hundred twelve".