105403 has 4 divisors (see below), whose sum is σ = 106480. Its totient is φ = 104328.

The previous prime is 105401. The next prime is 105407. The reversal of 105403 is 304501.

105403 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 105403 - 2¹ = 105401 is a prime.

It is a super-2 number, since 2×105403² = 22219584818, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (105401) 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, 375 + ... + 592.

It is an arithmetic number, because the mean of its divisors is an integer number (26620).

2¹⁰⁵⁴⁰³ is an apocalyptic number.

105403 is a deficient number, since it is larger than the sum of its proper divisors (1077).

105403 is an equidigital number, since it uses as much as digits as its factorization.

105403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 105403 is about 324.6582818904. The cubic root of 105403 is about 47.2372192787.

Adding to 105403 its reverse (304501), we get a palindrome (409904).

The spelling of 105403 in words is "one hundred five thousand, four hundred three".