424402129 has 2 divisors, whose sum is σ = 424402130. Its totient is φ = 424402128.

The previous prime is 424402117. The next prime is 424402159. The reversal of 424402129 is 921204424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421686225 + 2715904 = 20535^2 + 1648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424402129 is a prime.

It is equal to p_22566223 and since 424402129 and 22566223 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 424402097 and 424402106.

It is not a weakly prime, because it can be changed into another prime (424402159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212201064 + 212201065.

It is an arithmetic number, because the mean of its divisors is an integer number (212201065).

Almost surely, 2^424402129 is an apocalyptic number.

It is an amenable number.

424402129 is a deficient number, since it is larger than the sum of its proper divisors (1).

424402129 is an equidigital number, since it uses as much as digits as its factorization.

424402129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 424402129 is about 20601.0225231662. The cubic root of 424402129 is about 751.4945775979.

The spelling of 424402129 in words is "four hundred twenty-four million, four hundred two thousand, one hundred twenty-nine".