129206492 has 12 divisors (see below), whose sum is σ = 226191840. Its totient is φ = 64580256.

The previous prime is 129206471. The next prime is 129206501. The reversal of 129206492 is 294602921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16253 + ... + 22859.

It is an arithmetic number, because the mean of its divisors is an integer number (18849320).

Almost surely, 2^129206492 is an apocalyptic number.

It is an amenable number.

129206492 is a deficient number, since it is larger than the sum of its proper divisors (96985348).

129206492 is a wasteful number, since it uses less digits than its factorization.

129206492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500 (or 11498 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 129206492 is about 11366.9033601945. The cubic root of 129206492 is about 505.5468924133.

The spelling of 129206492 in words is "one hundred twenty-nine million, two hundred six thousand, four hundred ninety-two".