123103029 has 16 divisors (see below), whose sum is σ = 187983360. Its totient is φ = 70195440.

The previous prime is 123103007. The next prime is 123103031. The reversal of 123103029 is 920301321.

It is a happy number.

It is not a de Polignac number, because 123103029 - 2⁵ = 123102997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 123102996 and 123103014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123103049) 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, 4342 + ... + 16280.

It is an arithmetic number, because the mean of its divisors is an integer number (11748960).

Almost surely, 2^123103029 is an apocalyptic number.

It is an amenable number.

123103029 is a deficient number, since it is larger than the sum of its proper divisors (64880331).

123103029 is a wasteful number, since it uses less digits than its factorization.

123103029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12440.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 123103029 is about 11095.1804401731. The cubic root of 123103029 is about 497.4578016951.

The spelling of 123103029 in words is "one hundred twenty-three million, one hundred three thousand, twenty-nine".