129876212 has 12 divisors (see below), whose sum is σ = 227363556. Its totient is φ = 64915200.

The previous prime is 129876167. The next prime is 129876221. The reversal of 129876212 is 212678921.

It can be written as a sum of positive squares in 2 ways, for example, as 81072016 + 48804196 = 9004^2 + 6986^2 .

It is a congruent number.

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, 17462 + ... + 23762.

It is an arithmetic number, because the mean of its divisors is an integer number (18946963).

Almost surely, 2^129876212 is an apocalyptic number.

It is an amenable number.

129876212 is a deficient number, since it is larger than the sum of its proper divisors (97487344).

129876212 is a wasteful number, since it uses less digits than its factorization.

129876212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11458 (or 11456 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 129876212 is about 11396.3244952046. The cubic root of 129876212 is about 506.4188598520.

The spelling of 129876212 in words is "one hundred twenty-nine million, eight hundred seventy-six thousand, two hundred twelve".