129424541 has 2 divisors, whose sum is σ = 129424542. Its totient is φ = 129424540.

The previous prime is 129424501. The next prime is 129424549. The reversal of 129424541 is 145424921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128913316 + 511225 = 11354^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 129424541 - 2¹⁴ = 129408157 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 129424498 and 129424507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129424549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64712270 + 64712271.

It is an arithmetic number, because the mean of its divisors is an integer number (64712271).

Almost surely, 2^129424541 is an apocalyptic number.

It is an amenable number.

129424541 is a deficient number, since it is larger than the sum of its proper divisors (1).

129424541 is an equidigital number, since it uses as much as digits as its factorization.

129424541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 129424541 is about 11376.4907155063. The cubic root of 129424541 is about 505.8311197262.

The spelling of 129424541 in words is "one hundred twenty-nine million, four hundred twenty-four thousand, five hundred forty-one".