103129 has 4 divisors (see below), whose sum is σ = 111076. Its totient is φ = 95184.

The previous prime is 103123. The next prime is 103141. The reversal of 103129 is 921301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 921301 = 29 ⋅31769.

It can be written as a sum of positive squares in 2 ways, for example, as 21904 + 81225 = 148^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 103129 - 2⁷ = 103001 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103123) 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, 3954 + ... + 3979.

It is an arithmetic number, because the mean of its divisors is an integer number (27769).

2¹⁰³¹²⁹ is an apocalyptic number.

It is an amenable number.

103129 is a deficient number, since it is larger than the sum of its proper divisors (7947).

103129 is an equidigital number, since it uses as much as digits as its factorization.

103129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7946.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 103129 is about 321.1370423978. The cubic root of 103129 is about 46.8950426882.

It can be divided in two parts, 103 and 129, that added together give a palindrome (232).

The spelling of 103129 in words is "one hundred three thousand, one hundred twenty-nine".