129066945 has 16 divisors (see below), whose sum is σ = 236008320. Its totient is φ = 59001984.

The previous prime is 129066923. The next prime is 129066967. The reversal of 129066945 is 549660921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129066923) and next prime (129066967).

It is not a de Polignac number, because 129066945 - 2⁶ = 129066881 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129066897 and 129066906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614500 + ... + 614709.

It is an arithmetic number, because the mean of its divisors is an integer number (14750520).

Almost surely, 2^129066945 is an apocalyptic number.

129066945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129066945 is a deficient number, since it is larger than the sum of its proper divisors (106941375).

129066945 is a wasteful number, since it uses less digits than its factorization.

129066945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229224.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 129066945 is about 11360.7633986454. The cubic root of 129066945 is about 505.3648247679.

The spelling of 129066945 in words is "one hundred twenty-nine million, sixty-six thousand, nine hundred forty-five".