12472129 has 2 divisors, whose sum is σ = 12472130. Its totient is φ = 12472128.

The previous prime is 12472127. The next prime is 12472133. The reversal of 12472129 is 92127421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12439729 + 32400 = 3527^2 + 180^2 .

It is a cyclic number.

It is not a de Polignac number, because 12472129 - 2¹ = 12472127 is a prime.

Together with 12472127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12472097 and 12472106.

It is not a weakly prime, because it can be changed into another prime (12472127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6236064 + 6236065.

It is an arithmetic number, because the mean of its divisors is an integer number (6236065).

Almost surely, 2^12472129 is an apocalyptic number.

It is an amenable number.

12472129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12472129 is an equidigital number, since it uses as much as digits as its factorization.

12472129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 12472129 is about 3531.5901517588. The cubic root of 12472129 is about 231.9068256944.

It can be divided in two parts, 124721 and 29, that added together give a triangular number (124750 = T₄₉₉).

The spelling of 12472129 in words is "twelve million, four hundred seventy-two thousand, one hundred twenty-nine".