129672193 has 4 divisors (see below), whose sum is σ = 148196800. Its totient is φ = 111147588.

The previous prime is 129672173. The next prime is 129672203. The reversal of 129672193 is 391276921.

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, and also an emirpimes, since its reverse is a distinct semiprime: 391276921 = 7 ⋅55896703.

It is a cyclic number.

It is not a de Polignac number, because 129672193 - 2¹³ = 129664001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129672113) 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, 9262293 + ... + 9262306.

It is an arithmetic number, because the mean of its divisors is an integer number (37049200).

Almost surely, 2^129672193 is an apocalyptic number.

It is an amenable number.

129672193 is a deficient number, since it is larger than the sum of its proper divisors (18524607).

129672193 is an equidigital number, since it uses as much as digits as its factorization.

129672193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18524606.

The product of its digits is 40824, while the sum is 40.

The square root of 129672193 is about 11387.3698894872. The cubic root of 129672193 is about 506.1535476869.

The spelling of 129672193 in words is "one hundred twenty-nine million, six hundred seventy-two thousand, one hundred ninety-three".