129424292 has 6 divisors (see below), whose sum is σ = 226492518. Its totient is φ = 64712144.

The previous prime is 129424291. The next prime is 129424301. The reversal of 129424292 is 292424921.

It can be written as a sum of positive squares in only one way, i.e., 117202276 + 12222016 = 10826^2 + 3496^2 .

It is not an unprimeable number, because it can be changed into a prime (129424291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16178033 + ... + 16178040.

It is an arithmetic number, because the mean of its divisors is an integer number (37748753).

Almost surely, 2^129424292 is an apocalyptic number.

It is an amenable number.

129424292 is a deficient number, since it is larger than the sum of its proper divisors (97068226).

129424292 is a wasteful number, since it uses less digits than its factorization.

129424292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32356077 (or 32356075 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 129424292 is about 11376.4797718802. The cubic root of 129424292 is about 505.8307953363.

The spelling of 129424292 in words is "one hundred twenty-nine million, four hundred twenty-four thousand, two hundred ninety-two".