129292007 has 4 divisors (see below), whose sum is σ = 139237560. Its totient is φ = 119346456.

The previous prime is 129292003. The next prime is 129292027. The reversal of 129292007 is 700292921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129292007 - 2² = 129292003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129292003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4972757 + ... + 4972782.

It is an arithmetic number, because the mean of its divisors is an integer number (34809390).

Almost surely, 2^129292007 is an apocalyptic number.

129292007 is a deficient number, since it is larger than the sum of its proper divisors (9945553).

129292007 is an equidigital number, since it uses as much as digits as its factorization.

129292007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9945552.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 129292007 is about 11370.6643165648. The cubic root of 129292007 is about 505.6583994738.

The spelling of 129292007 in words is "one hundred twenty-nine million, two hundred ninety-two thousand, seven".