129926001 has 16 divisors (see below), whose sum is σ = 177408000. Its totient is φ = 84541008.

The previous prime is 129925997. The next prime is 129926021. The reversal of 129926001 is 100629921.

It is a happy number.

It is not a de Polignac number, because 129926001 - 2² = 129925997 is a prime.

It is a super-3 number, since 3×129926001³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129926001.

It is not an unprimeable number, because it can be changed into a prime (129926021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60850 + ... + 62948.

It is an arithmetic number, because the mean of its divisors is an integer number (11088000).

Almost surely, 2^129926001 is an apocalyptic number.

It is an amenable number.

129926001 is a deficient number, since it is larger than the sum of its proper divisors (47481999).

129926001 is a wasteful number, since it uses less digits than its factorization.

129926001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 129926001 is about 11398.5087182491. The cubic root of 129926001 is about 506.4835647144.

The spelling of 129926001 in words is "one hundred twenty-nine million, nine hundred twenty-six thousand, one".