129601019 has 2 divisors, whose sum is σ = 129601020. Its totient is φ = 129601018.

The previous prime is 129601007. The next prime is 129601037. The reversal of 129601019 is 910106921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129601019 - 2⁸ = 129600763 is a prime.

It is a super-2 number, since 2×129601019² = 33592848251676722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129600982 and 129601000.

It is not a weakly prime, because it can be changed into another prime (129601099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64800509 + 64800510.

It is an arithmetic number, because the mean of its divisors is an integer number (64800510).

Almost surely, 2^129601019 is an apocalyptic number.

129601019 is a deficient number, since it is larger than the sum of its proper divisors (1).

129601019 is an equidigital number, since it uses as much as digits as its factorization.

129601019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 129601019 is about 11384.2443315312. The cubic root of 129601019 is about 506.0609255015.

The spelling of 129601019 in words is "one hundred twenty-nine million, six hundred one thousand, nineteen".