129141799 has 4 divisors (see below), whose sum is σ = 129166920. Its totient is φ = 129116680.

The previous prime is 129141773. The next prime is 129141811. The reversal of 129141799 is 997141921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997141921 = 43 ⋅23189347.

It is a cyclic number.

It is not a de Polignac number, because 129141799 - 2⁷ = 129141671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129141769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1744 + ... + 16165.

It is an arithmetic number, because the mean of its divisors is an integer number (32291730).

Almost surely, 2^129141799 is an apocalyptic number.

129141799 is a deficient number, since it is larger than the sum of its proper divisors (25121).

129141799 is an equidigital number, since it uses as much as digits as its factorization.

129141799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25120.

The product of its digits is 40824, while the sum is 43.

The square root of 129141799 is about 11364.0573300208. The cubic root of 129141799 is about 505.4625034516.

The spelling of 129141799 in words is "one hundred twenty-nine million, one hundred forty-one thousand, seven hundred ninety-nine".