129392 has 10 divisors (see below), whose sum is σ = 250728. Its totient is φ = 64688.

The previous prime is 129379. The next prime is 129401. The reversal of 129392 is 293921.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 129392.

It is an unprimeable number.

129392 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4028 + ... + 4059.

2¹²⁹³⁹² is an apocalyptic number.

It is an amenable number.

129392 is a deficient number, since it is larger than the sum of its proper divisors (121336).

129392 is an equidigital number, since it uses as much as digits as its factorization.

129392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8095 (or 8089 counting only the distinct ones).

The product of its digits is 972, while the sum is 26.

The square root of 129392 is about 359.7109951058. The cubic root of 129392 is about 50.5788722743.

It can be divided in two parts, 12939 and 2, that multiplied together give a triangular number (25878 = T₂₂₇).

The spelling of 129392 in words is "one hundred twenty-nine thousand, three hundred ninety-two".