129372041 has 4 divisors (see below), whose sum is σ = 129599184. Its totient is φ = 129144900.

The previous prime is 129372031. The next prime is 129372043. The reversal of 129372041 is 140273921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129372041 - 2²² = 125177737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129371995 and 129372013.

It is not an unprimeable number, because it can be changed into a prime (129372043) 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, 112715 + ... + 113856.

It is an arithmetic number, because the mean of its divisors is an integer number (32399796).

Almost surely, 2^129372041 is an apocalyptic number.

It is an amenable number.

129372041 is a deficient number, since it is larger than the sum of its proper divisors (227143).

129372041 is an equidigital number, since it uses as much as digits as its factorization.

129372041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227142.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 129372041 is about 11374.1830915455. The cubic root of 129372041 is about 505.7627150657.

The spelling of 129372041 in words is "one hundred twenty-nine million, three hundred seventy-two thousand, forty-one".