129937851 has 40 divisors (see below), whose sum is σ = 206997120. Its totient is φ = 80946432.

The previous prime is 129937849. The next prime is 129937853. The reversal of 129937851 is 158739921.

It is an interprime number because it is at equal distance from previous prime (129937849) and next prime (129937853).

It is not a de Polignac number, because 129937851 - 2¹ = 129937849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129937797 and 129937806.

It is not an unprimeable number, because it can be changed into a prime (129937853) 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 39 ways as a sum of consecutive naturals, for example, 271030 + ... + 271508.

It is an arithmetic number, because the mean of its divisors is an integer number (5174928).

Almost surely, 2^129937851 is an apocalyptic number.

129937851 is a deficient number, since it is larger than the sum of its proper divisors (77059269).

129937851 is a wasteful number, since it uses less digits than its factorization.

129937851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 696 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 129937851 is about 11399.0285112373. The cubic root of 129937851 is about 506.4989623195.

The spelling of 129937851 in words is "one hundred twenty-nine million, nine hundred thirty-seven thousand, eight hundred fifty-one".