129848047 has 4 divisors (see below), whose sum is σ = 148397776. Its totient is φ = 111298320.

The previous prime is 129848029. The next prime is 129848099. The reversal of 129848047 is 740848921.

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

It is not a de Polignac number, because 129848047 - 2¹¹ = 129845999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129847994 and 129848012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129848027) 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 in 3 ways as a sum of consecutive naturals, for example, 9274854 + ... + 9274867.

It is an arithmetic number, because the mean of its divisors is an integer number (37099444).

Almost surely, 2^129848047 is an apocalyptic number.

129848047 is a deficient number, since it is larger than the sum of its proper divisors (18549729).

129848047 is an equidigital number, since it uses as much as digits as its factorization.

129848047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18549728.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 129848047 is about 11395.0887227788. The cubic root of 129848047 is about 506.3822498160.

The spelling of 129848047 in words is "one hundred twenty-nine million, eight hundred forty-eight thousand, forty-seven".