129476233 has 4 divisors (see below), whose sum is σ = 137092500. Its totient is φ = 121859968.

The previous prime is 129476201. The next prime is 129476251. The reversal of 129476233 is 332674921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74597769 + 54878464 = 8637^2 + 7408^2 .

It is a cyclic number.

It is not a de Polignac number, because 129476233 - 2⁵ = 129476201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129476192 and 129476201.

It is not an unprimeable number, because it can be changed into a prime (129476293) 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, 3808108 + ... + 3808141.

It is an arithmetic number, because the mean of its divisors is an integer number (34273125).

Almost surely, 2^129476233 is an apocalyptic number.

It is an amenable number.

129476233 is a deficient number, since it is larger than the sum of its proper divisors (7616267).

129476233 is an equidigital number, since it uses as much as digits as its factorization.

129476233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7616266.

The product of its digits is 54432, while the sum is 37.

The square root of 129476233 is about 11378.7623667954. The cubic root of 129476233 is about 505.8984535351.

The spelling of 129476233 in words is "one hundred twenty-nine million, four hundred seventy-six thousand, two hundred thirty-three".