129690292 has 24 divisors (see below), whose sum is σ = 231309344. Its totient is φ = 63610272.

The previous prime is 129690283. The next prime is 129690293. The reversal of 129690292 is 292096921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129690293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73363 + ... + 75109.

Almost surely, 2^129690292 is an apocalyptic number.

It is an amenable number.

129690292 is a deficient number, since it is larger than the sum of its proper divisors (101619052).

129690292 is a wasteful number, since it uses less digits than its factorization.

129690292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 129690292 is about 11388.1645579962. The cubic root of 129690292 is about 506.1770953899.

The spelling of 129690292 in words is "one hundred twenty-nine million, six hundred ninety thousand, two hundred ninety-two".