129472090 has 16 divisors (see below), whose sum is σ = 254236320. Its totient is φ = 47080720.

The previous prime is 129472069. The next prime is 129472093. The reversal of 129472090 is 90274921.

It is a happy number.

129472090 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (129472093) 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, 588400 + ... + 588619.

It is an arithmetic number, because the mean of its divisors is an integer number (15889770).

Almost surely, 2^129472090 is an apocalyptic number.

129472090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129472090 is a deficient number, since it is larger than the sum of its proper divisors (124764230).

129472090 is a wasteful number, since it uses less digits than its factorization.

129472090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177037.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 129472090 is about 11378.5803156633. The cubic root of 129472090 is about 505.8930575392.

The spelling of 129472090 in words is "one hundred twenty-nine million, four hundred seventy-two thousand, ninety".