129254212 has 12 divisors (see below), whose sum is σ = 226277100. Its totient is φ = 64603616.

The previous prime is 129254201. The next prime is 129254219. The reversal of 129254212 is 212452921.

It can be written as a sum of positive squares in 2 ways, for example, as 75759616 + 53494596 = 8704^2 + 7314^2 .

It is not an unprimeable number, because it can be changed into a prime (129254219) 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, 13914 + ... + 21262.

It is an arithmetic number, because the mean of its divisors is an integer number (18856425).

Almost surely, 2^129254212 is an apocalyptic number.

It is an amenable number.

129254212 is a deficient number, since it is larger than the sum of its proper divisors (97022888).

129254212 is a wasteful number, since it uses less digits than its factorization.

129254212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11750 (or 11748 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 129254212 is about 11369.0022429411. The cubic root of 129254212 is about 505.6091228475.

The spelling of 129254212 in words is "one hundred twenty-nine million, two hundred fifty-four thousand, two hundred twelve".