129016042 has 8 divisors (see below), whose sum is σ = 203709600. Its totient is φ = 61112844.

The previous prime is 129016031. The next prime is 129016103. The reversal of 129016042 is 240610921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 129015998 and 129016016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697542 + ... + 1697617.

It is an arithmetic number, because the mean of its divisors is an integer number (25463700).

Almost surely, 2^129016042 is an apocalyptic number.

129016042 is a deficient number, since it is larger than the sum of its proper divisors (74693558).

129016042 is a wasteful number, since it uses less digits than its factorization.

129016042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395180.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 129016042 is about 11358.5228793184. The cubic root of 129016042 is about 505.2983787122.

Adding to 129016042 its reverse (240610921), we get a palindrome (369626963).

The spelling of 129016042 in words is "one hundred twenty-nine million, sixteen thousand, forty-two".