129069 has 6 divisors (see below), whose sum is σ = 186446. Its totient is φ = 86040.

The previous prime is 129061. The next prime is 129083. The reversal of 129069 is 960921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72900 + 56169 = 270^2 + 237^2 .

It is not a de Polignac number, because 129069 - 2³ = 129061 is a prime.

It is a super-2 number, since 2×129069² = 33317613522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129061) 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, 7162 + ... + 7179.

2¹²⁹⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

129069 is a deficient number, since it is larger than the sum of its proper divisors (57377).

129069 is a wasteful number, since it uses less digits than its factorization.

129069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14347 (or 14344 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 129069 is about 359.2617430231. The cubic root of 129069 is about 50.5367506888.

The spelling of 129069 in words is "one hundred twenty-nine thousand, sixty-nine".