126210103 has 4 divisors (see below), whose sum is σ = 132852760. Its totient is φ = 119567448.

The previous prime is 126210067. The next prime is 126210107. The reversal of 126210103 is 301012621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126210103 - 2⁹ = 126209591 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 (126210107) 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, 3321300 + ... + 3321337.

It is an arithmetic number, because the mean of its divisors is an integer number (33213190).

Almost surely, 2^126210103 is an apocalyptic number.

126210103 is a deficient number, since it is larger than the sum of its proper divisors (6642657).

126210103 is an equidigital number, since it uses as much as digits as its factorization.

126210103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6642656.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 126210103 is about 11234.3269936387. The cubic root of 126210103 is about 501.6082919142.

Adding to 126210103 its reverse (301012621), we get a palindrome (427222724).

The spelling of 126210103 in words is "one hundred twenty-six million, two hundred ten thousand, one hundred three".