129270430 has 16 divisors (see below), whose sum is σ = 233110224. Its totient is φ = 51614080.

The previous prime is 129270409. The next prime is 129270439. The reversal of 129270430 is 34072921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129270439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5851 + ... + 17110.

It is an arithmetic number, because the mean of its divisors is an integer number (14569389).

Almost surely, 2^129270430 is an apocalyptic number.

129270430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129270430 is a deficient number, since it is larger than the sum of its proper divisors (103839794).

129270430 is a wasteful number, since it uses less digits than its factorization.

129270430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23531.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 129270430 is about 11369.7154757716. The cubic root of 129270430 is about 505.6302688401.

The spelling of 129270430 in words is "one hundred twenty-nine million, two hundred seventy thousand, four hundred thirty".