129045270 has 32 divisors (see below), whose sum is σ = 318081888. Its totient is φ = 33481728.

The previous prime is 129045223. The next prime is 129045277. The reversal of 129045270 is 72540921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129045277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57019 + ... + 59238.

It is an arithmetic number, because the mean of its divisors is an integer number (9940059).

Almost surely, 2^129045270 is an apocalyptic number.

129045270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129045270 is an abundant number, since it is smaller than the sum of its proper divisors (189036618).

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

129045270 is a wasteful number, since it uses less digits than its factorization.

129045270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116304.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 129045270 is about 11359.8094174154. The cubic root of 129045270 is about 505.3365335174.

The spelling of 129045270 in words is "one hundred twenty-nine million, forty-five thousand, two hundred seventy".