123434103 has 16 divisors (see below), whose sum is σ = 179486720. Its totient is φ = 74996064.

The previous prime is 123434083. The next prime is 123434111. The reversal of 123434103 is 301434321.

It is not a de Polignac number, because 123434103 - 2⁶ = 123434039 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 123434103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123434153) 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, 16951 + ... + 23112.

It is an arithmetic number, because the mean of its divisors is an integer number (11217920).

Almost surely, 2^123434103 is an apocalyptic number.

123434103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123434103 is a deficient number, since it is larger than the sum of its proper divisors (56052617).

123434103 is a wasteful number, since it uses less digits than its factorization.

123434103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40158.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 123434103 is about 11110.0901436487. The cubic root of 123434103 is about 497.9033578052.

Adding to 123434103 its reverse (301434321), we get a palindrome (424868424).

The spelling of 123434103 in words is "one hundred twenty-three million, four hundred thirty-four thousand, one hundred three".