129245156 has 6 divisors (see below), whose sum is σ = 226179030. Its totient is φ = 64622576.

The previous prime is 129245147. The next prime is 129245173. The reversal of 129245156 is 651542921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 120340900 + 8904256 = 10970^2 + 2984^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16155641 + ... + 16155648.

It is an arithmetic number, because the mean of its divisors is an integer number (37696505).

Almost surely, 2^129245156 is an apocalyptic number.

It is an amenable number.

129245156 is a deficient number, since it is larger than the sum of its proper divisors (96933874).

129245156 is a wasteful number, since it uses less digits than its factorization.

129245156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32311293 (or 32311291 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 129245156 is about 11368.6039600296. The cubic root of 129245156 is about 505.5973143267.

The spelling of 129245156 in words is "one hundred twenty-nine million, two hundred forty-five thousand, one hundred fifty-six".