129630023 has 2 divisors, whose sum is σ = 129630024. Its totient is φ = 129630022.

The previous prime is 129629999. The next prime is 129630037. The reversal of 129630023 is 320036921.

It is a strong prime.

It is an emirp because it is prime and its reverse (320036921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129630023 - 2⁶ = 129629959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129629974 and 129630001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129660023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64815011 + 64815012.

It is an arithmetic number, because the mean of its divisors is an integer number (64815012).

Almost surely, 2^129630023 is an apocalyptic number.

129630023 is a deficient number, since it is larger than the sum of its proper divisors (1).

129630023 is an equidigital number, since it uses as much as digits as its factorization.

129630023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 129630023 is about 11385.5181261109. The cubic root of 129630023 is about 506.0986739091.

Adding to 129630023 its reverse (320036921), we get a palindrome (449666944).

The spelling of 129630023 in words is "one hundred twenty-nine million, six hundred thirty thousand, twenty-three".