129072014 has 4 divisors (see below), whose sum is σ = 193608024. Its totient is φ = 64536006.

The previous prime is 129071993. The next prime is 129072029. The reversal of 129072014 is 410270921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 410270921 = 2143 ⋅191447.

It is a congruent number.

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, 32268002 + ... + 32268005.

It is an arithmetic number, because the mean of its divisors is an integer number (48402006).

Almost surely, 2^129072014 is an apocalyptic number.

129072014 is a deficient number, since it is larger than the sum of its proper divisors (64536010).

129072014 is an equidigital number, since it uses as much as digits as its factorization.

129072014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64536009.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 129072014 is about 11360.9864888574. The cubic root of 129072014 is about 505.3714406131.

The spelling of 129072014 in words is "one hundred twenty-nine million, seventy-two thousand, fourteen".