126166103 has 4 divisors (see below), whose sum is σ = 144189840. Its totient is φ = 108142368.

The previous prime is 126166067. The next prime is 126166123. The reversal of 126166103 is 301661621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301661621 = 4547 ⋅66343.

It is a cyclic number.

It is not a de Polignac number, because 126166103 - 2⁸ = 126165847 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 (126166123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9011858 + ... + 9011871.

It is an arithmetic number, because the mean of its divisors is an integer number (36047460).

Almost surely, 2^126166103 is an apocalyptic number.

126166103 is a deficient number, since it is larger than the sum of its proper divisors (18023737).

126166103 is an equidigital number, since it uses as much as digits as its factorization.

126166103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18023736.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 126166103 is about 11232.3685391818. The cubic root of 126166103 is about 501.5499940716.

The spelling of 126166103 in words is "one hundred twenty-six million, one hundred sixty-six thousand, one hundred three".