129754418 has 4 divisors (see below), whose sum is σ = 194631630. Its totient is φ = 64877208.

The previous prime is 129754409. The next prime is 129754453. The reversal of 129754418 is 814457921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 97752769 + 32001649 = 9887^2 + 5657^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 32438603 + ... + 32438606.

Almost surely, 2^129754418 is an apocalyptic number.

129754418 is a deficient number, since it is larger than the sum of its proper divisors (64877212).

129754418 is an equidigital number, since it uses as much as digits as its factorization.

129754418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64877211.

The product of its digits is 80640, while the sum is 41.

The square root of 129754418 is about 11390.9796769198. The cubic root of 129754418 is about 506.2605088912.

The spelling of 129754418 in words is "one hundred twenty-nine million, seven hundred fifty-four thousand, four hundred eighteen".