105620403 has 16 divisors (see below), whose sum is σ = 161166080. Its totient is φ = 60271776.

The previous prime is 105620357. The next prime is 105620413. The reversal of 105620403 is 304026501.

It is a happy number.

It is not a de Polignac number, because 105620403 - 2¹⁴ = 105604019 is a prime.

It is a super-2 number, since 2×105620403² = 22311339059764818, which contains 22 as substring.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105620403.

It is not an unprimeable number, because it can be changed into a prime (105620413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14376 + ... + 20442.

It is an arithmetic number, because the mean of its divisors is an integer number (10072880).

Almost surely, 2^105620403 is an apocalyptic number.

105620403 is a deficient number, since it is larger than the sum of its proper divisors (55545677).

105620403 is an equidigital number, since it uses as much as digits as its factorization.

105620403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6906.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 105620403 is about 10277.1787471076. The cubic root of 105620403 is about 472.6967395478.

Adding to 105620403 its reverse (304026501), we get a palindrome (409646904).

The spelling of 105620403 in words is "one hundred five million, six hundred twenty thousand, four hundred three".