12939129 has 32 divisors (see below), whose sum is σ = 22077440. Its totient is φ = 7336656.

The previous prime is 12939127. The next prime is 12939131. The reversal of 12939129 is 92193921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12939127) and next prime (12939131).

It is not a de Polignac number, because 12939129 - 2¹ = 12939127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12939093 and 12939102.

It is not an unprimeable number, because it can be changed into a prime (12939127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41994 + ... + 42300.

It is an arithmetic number, because the mean of its divisors is an integer number (689920).

Almost surely, 2^12939129 is an apocalyptic number.

It is an amenable number.

12939129 is a deficient number, since it is larger than the sum of its proper divisors (9138311).

12939129 is a wasteful number, since it uses less digits than its factorization.

12939129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 540 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 12939129 is about 3597.1000820105. The cubic root of 12939129 is about 234.7658993610.

It can be divided in two parts, 1293912 and 9, that added together give a palindrome (1293921).

The spelling of 12939129 in words is "twelve million, nine hundred thirty-nine thousand, one hundred twenty-nine".