105123403 has 8 divisors (see below), whose sum is σ = 131063040. Its totient is φ = 81914280.

The previous prime is 105123397. The next prime is 105123407. The reversal of 105123403 is 304321501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105123403 - 2¹³ = 105115211 is a prime.

It is a super-2 number, since 2×105123403² = 22101859716600818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105123407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682543 + ... + 682696.

It is an arithmetic number, because the mean of its divisors is an integer number (16382880).

Almost surely, 2^105123403 is an apocalyptic number.

105123403 is a deficient number, since it is larger than the sum of its proper divisors (25939637).

105123403 is a wasteful number, since it uses less digits than its factorization.

105123403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365257.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 105123403 is about 10252.9704476313. The cubic root of 105123403 is about 471.9541439579.

Adding to 105123403 its reverse (304321501), we get a palindrome (409444904).

The spelling of 105123403 in words is "one hundred five million, one hundred twenty-three thousand, four hundred three".