43226129 has 2 divisors, whose sum is σ = 43226130. Its totient is φ = 43226128.

The previous prime is 43226123. The next prime is 43226179. The reversal of 43226129 is 92162234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40666129 + 2560000 = 6377^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 43226129 - 2¹² = 43222033 is a prime.

It is not a weakly prime, because it can be changed into another prime (43226123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21613064 + 21613065.

It is an arithmetic number, because the mean of its divisors is an integer number (21613065).

Almost surely, 2^43226129 is an apocalyptic number.

It is an amenable number.

43226129 is a deficient number, since it is larger than the sum of its proper divisors (1).

43226129 is an equidigital number, since it uses as much as digits as its factorization.

43226129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 43226129 is about 6574.6580899694. The cubic root of 43226129 is about 350.9528566051.

The spelling of 43226129 in words is "forty-three million, two hundred twenty-six thousand, one hundred twenty-nine".