129029126250 has 40 divisors (see below), whose sum is σ = 322469601696. Its totient is φ = 34407766000.

The previous prime is 129029126243. The next prime is 129029126257. The reversal of 129029126250 is 52621920921.

It is an interprime number because it is at equal distance from previous prime (129029126243) and next prime (129029126257).

It is a junction number, because it is equal to n+sod(n) for n = 129029126199 and 129029126208.

It is not an unprimeable number, because it can be changed into a prime (129029126257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17200134 + ... + 17207633.

Almost surely, 2^129029126250 is an apocalyptic number.

129029126250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129029126250 is an abundant number, since it is smaller than the sum of its proper divisors (193440475446).

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

129029126250 is an equidigital number, since it uses as much as digits as its factorization.

129029126250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34407792 (or 34407777 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 129029126250 in words is "one hundred twenty-nine billion, twenty-nine million, one hundred twenty-six thousand, two hundred fifty".