129041893 has 4 divisors (see below), whose sum is σ = 130248000. Its totient is φ = 127835788.

The previous prime is 129041879. The next prime is 129041921. The reversal of 129041893 is 398140921.

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: 398140921 = 109 ⋅3652669.

It is a cyclic number.

It is not a de Polignac number, because 129041893 - 2²⁵ = 95487461 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 (129041813) 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, 602893 + ... + 603106.

It is an arithmetic number, because the mean of its divisors is an integer number (32562000).

Almost surely, 2^129041893 is an apocalyptic number.

It is an amenable number.

129041893 is a deficient number, since it is larger than the sum of its proper divisors (1206107).

129041893 is a wasteful number, since it uses less digits than its factorization.

129041893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206106.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 129041893 is about 11359.6607783859. The cubic root of 129041893 is about 505.3321254097.

The spelling of 129041893 in words is "one hundred twenty-nine million, forty-one thousand, eight hundred ninety-three".