129379574 has 4 divisors (see below), whose sum is σ = 194069364. Its totient is φ = 64689786.

The previous prime is 129379573. The next prime is 129379583. The reversal of 129379574 is 475973921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129379573) 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 as a sum of consecutive naturals, namely, 32344892 + ... + 32344895.

It is an arithmetic number, because the mean of its divisors is an integer number (48517341).

Almost surely, 2^129379574 is an apocalyptic number.

129379574 is a deficient number, since it is larger than the sum of its proper divisors (64689790).

129379574 is an equidigital number, since it uses as much as digits as its factorization.

129379574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64689789.

The product of its digits is 476280, while the sum is 47.

The square root of 129379574 is about 11374.5142313859. The cubic root of 129379574 is about 505.7725312943.

The spelling of 129379574 in words is "one hundred twenty-nine million, three hundred seventy-nine thousand, five hundred seventy-four".