129041026 has 8 divisors (see below), whose sum is σ = 195039504. Its totient is φ = 64027860.

The previous prime is 129041023. The next prime is 129041041. The reversal of 129041026 is 620140921.

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

It is a super-2 number, since 2×129041026² = 33303172782265352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129041023) 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, 246000 + ... + 246523.

It is an arithmetic number, because the mean of its divisors is an integer number (24379938).

Almost surely, 2^129041026 is an apocalyptic number.

129041026 is a deficient number, since it is larger than the sum of its proper divisors (65998478).

129041026 is a wasteful number, since it uses less digits than its factorization.

129041026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492656.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 129041026 is about 11359.6226169710. The cubic root of 129041026 is about 505.3309936740.

Adding to 129041026 its reverse (620140921), we get a palindrome (749181947).

The spelling of 129041026 in words is "one hundred twenty-nine million, forty-one thousand, twenty-six".