126103103 has 4 divisors (see below), whose sum is σ = 144117840. Its totient is φ = 108088368.

The previous prime is 126103097. The next prime is 126103139. The reversal of 126103103 is 301301621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301301621 = 107 ⋅2815903.

It is a cyclic number.

It is not a de Polignac number, because 126103103 - 2¹² = 126099007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126103403) 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, 9007358 + ... + 9007371.

It is an arithmetic number, because the mean of its divisors is an integer number (36029460).

Almost surely, 2^126103103 is an apocalyptic number.

126103103 is a deficient number, since it is larger than the sum of its proper divisors (18014737).

126103103 is an equidigital number, since it uses as much as digits as its factorization.

126103103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18014736.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 126103103 is about 11229.5637938435. The cubic root of 126103103 is about 501.4664985588.

Adding to 126103103 its reverse (301301621), we get a palindrome (427404724).

The spelling of 126103103 in words is "one hundred twenty-six million, one hundred three thousand, one hundred three".