129120382290 has 32 divisors (see below), whose sum is σ = 309940683840. Its totient is φ = 34426350144.

The previous prime is 129120382289. The next prime is 129120382291. The reversal of 129120382290 is 92283021921.

It is an interprime number because it is at equal distance from previous prime (129120382289) and next prime (129120382291).

It is not an unprimeable number, because it can be changed into a prime (129120382291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175360 + ... + 537579.

It is an arithmetic number, because the mean of its divisors is an integer number (9685646370).

Almost surely, 2^129120382290 is an apocalyptic number.

129120382290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129120382290 is an abundant number, since it is smaller than the sum of its proper divisors (180820301550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129120382290 is a wasteful number, since it uses less digits than its factorization.

129120382290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718986.

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 129120382290 in words is "one hundred twenty-nine billion, one hundred twenty million, three hundred eighty-two thousand, two hundred ninety".