129404214 has 12 divisors (see below), whose sum is σ = 280375836. Its totient is φ = 43134732.

The previous prime is 129404213. The next prime is 129404251. The reversal of 129404214 is 412404921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129404213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3594544 + ... + 3594579.

It is an arithmetic number, because the mean of its divisors is an integer number (23364653).

Almost surely, 2^129404214 is an apocalyptic number.

129404214 is an abundant number, since it is smaller than the sum of its proper divisors (150971622).

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

129404214 is a wasteful number, since it uses less digits than its factorization.

129404214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189131 (or 7189128 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 129404214 is about 11375.5973029991. The cubic root of 129404214 is about 505.8046369396.

The spelling of 129404214 in words is "one hundred twenty-nine million, four hundred four thousand, two hundred fourteen".