129223547 has 8 divisors (see below), whose sum is σ = 130104000. Its totient is φ = 128346624.

The previous prime is 129223519. The next prime is 129223553. The reversal of 129223547 is 745322921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129223547 - 2⁶ = 129223483 is a prime.

It is a super-2 number, since 2×129223547² = 33397450198522418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129223597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123854 + ... + 124892.

It is an arithmetic number, because the mean of its divisors is an integer number (16263000).

Almost surely, 2^129223547 is an apocalyptic number.

129223547 is a deficient number, since it is larger than the sum of its proper divisors (880453).

129223547 is a wasteful number, since it uses less digits than its factorization.

129223547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765.

The product of its digits is 30240, while the sum is 35.

The square root of 129223547 is about 11367.6535397592. The cubic root of 129223547 is about 505.5691351628.

The spelling of 129223547 in words is "one hundred twenty-nine million, two hundred twenty-three thousand, five hundred forty-seven".