129940083 has 24 divisors (see below), whose sum is σ = 231006048. Its totient is φ = 68539392.

The previous prime is 129940043. The next prime is 129940091. The reversal of 129940083 is 380049921.

It is not a de Polignac number, because 129940083 - 2¹⁰ = 129939059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129940043) 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 23 ways as a sum of consecutive naturals, for example, 78510 + ... + 80147.

It is an arithmetic number, because the mean of its divisors is an integer number (9625252).

Almost surely, 2^129940083 is an apocalyptic number.

129940083 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

129940083 is a deficient number, since it is larger than the sum of its proper divisors (101065965).

129940083 is a wasteful number, since it uses less digits than its factorization.

129940083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158683 (or 158680 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 129940083 is about 11399.1264138968. The cubic root of 129940083 is about 506.5018624219.

The spelling of 129940083 in words is "one hundred twenty-nine million, nine hundred forty thousand, eighty-three".