129573142 has 8 divisors (see below), whose sum is σ = 196543800. Its totient is φ = 64058544.

The previous prime is 129573139. The next prime is 129573151. The reversal of 129573142 is 241375921.

It is a happy number.

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 = 129573098 and 129573107.

It is a congruent number.

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, 363792 + ... + 364147.

It is an arithmetic number, because the mean of its divisors is an integer number (24567975).

Almost surely, 2^129573142 is an apocalyptic number.

129573142 is a deficient number, since it is larger than the sum of its proper divisors (66970658).

129573142 is an equidigital number, since it uses as much as digits as its factorization.

129573142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728030.

The product of its digits is 15120, while the sum is 34.

The square root of 129573142 is about 11383.0198980763. The cubic root of 129573142 is about 506.0246385645.

The spelling of 129573142 in words is "one hundred twenty-nine million, five hundred seventy-three thousand, one hundred forty-two".