129942373 has 8 divisors (see below), whose sum is σ = 150094080. Its totient is φ = 111180480.

The previous prime is 129942361. The next prime is 129942377. The reversal of 129942373 is 373249921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129942373 is a prime.

It is a super-2 number, since 2×129942373² = 33770040601742258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129942377) 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 7 ways as a sum of consecutive naturals, for example, 347253 + ... + 347626.

It is an arithmetic number, because the mean of its divisors is an integer number (18761760).

Almost surely, 2^129942373 is an apocalyptic number.

It is an amenable number.

129942373 is a deficient number, since it is larger than the sum of its proper divisors (20151707).

129942373 is a wasteful number, since it uses less digits than its factorization.

129942373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694907.

The product of its digits is 81648, while the sum is 40.

The square root of 129942373 is about 11399.2268597480. The cubic root of 129942373 is about 506.5048378509.

The spelling of 129942373 in words is "one hundred twenty-nine million, nine hundred forty-two thousand, three hundred seventy-three".