129141426 has 8 divisors (see below), whose sum is σ = 258282864. Its totient is φ = 43047140.

The previous prime is 129141413. The next prime is 129141451. The reversal of 129141426 is 624141921.

It is a sphenic number, since it is the product of 3 distinct primes.

129141426 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 129141393 and 129141402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10761780 + ... + 10761791.

It is an arithmetic number, because the mean of its divisors is an integer number (32285358).

Almost surely, 2^129141426 is an apocalyptic number.

129141426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129141426 is a wasteful number, since it uses less digits than its factorization.

129141426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21523576.

The product of its digits is 3456, while the sum is 30.

The square root of 129141426 is about 11364.0409186169. The cubic root of 129141426 is about 505.4620168091.

The spelling of 129141426 in words is "one hundred twenty-nine million, one hundred forty-one thousand, four hundred twenty-six".