129916051 has 4 divisors (see below), whose sum is σ = 130483600. Its totient is φ = 129348504.

The previous prime is 129916049. The next prime is 129916069. The reversal of 129916051 is 150619921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150619921 = 6659 ⋅22619.

It is a cyclic number.

It is not a de Polignac number, because 129916051 - 2¹ = 129916049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129915998 and 129916016.

It is not an unprimeable number, because it can be changed into a prime (129916151) 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 in 3 ways as a sum of consecutive naturals, for example, 283431 + ... + 283888.

It is an arithmetic number, because the mean of its divisors is an integer number (32620900).

Almost surely, 2^129916051 is an apocalyptic number.

129916051 is a deficient number, since it is larger than the sum of its proper divisors (567549).

129916051 is an equidigital number, since it uses as much as digits as its factorization.

129916051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567548.

The product of its (nonzero) digits is 4860, while the sum is 34.

The square root of 129916051 is about 11398.0722492885. The cubic root of 129916051 is about 506.4706352005.

The spelling of 129916051 in words is "one hundred twenty-nine million, nine hundred sixteen thousand, fifty-one".