129062229 has 4 divisors (see below), whose sum is σ = 172082976. Its totient is φ = 86041484.

The previous prime is 129062183. The next prime is 129062237. The reversal of 129062229 is 922260921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 922260921 = 3 ⋅307420307.

It is a cyclic number.

It is not a de Polignac number, because 129062229 - 2¹² = 129058133 is a prime.

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 129062229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129042229) 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, 21510369 + ... + 21510374.

It is an arithmetic number, because the mean of its divisors is an integer number (43020744).

Almost surely, 2^129062229 is an apocalyptic number.

It is an amenable number.

129062229 is a deficient number, since it is larger than the sum of its proper divisors (43020747).

129062229 is an equidigital number, since it uses as much as digits as its factorization.

129062229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43020746.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 129062229 is about 11360.5558402747. Note that the first 3 decimals coincide. The cubic root of 129062229 is about 505.3586694880.

The spelling of 129062229 in words is "one hundred twenty-nine million, sixty-two thousand, two hundred twenty-nine".