129774430 has 64 divisors (see below), whose sum is σ = 259858368. Its totient is φ = 46448640.

The previous prime is 129774409. The next prime is 129774433. The reversal of 129774430 is 34477921.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 129774430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129774433) 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 31 ways as a sum of consecutive naturals, for example, 299494 + ... + 299926.

It is an arithmetic number, because the mean of its divisors is an integer number (4060287).

Almost surely, 2^129774430 is an apocalyptic number.

129774430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129774430 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

129774430 is a wasteful number, since it uses less digits than its factorization.

129774430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 129774430 is about 11391.8580574022. The cubic root of 129774430 is about 506.2865343750.

The spelling of 129774430 in words is "one hundred twenty-nine million, seven hundred seventy-four thousand, four hundred thirty".