129672046 has 8 divisors (see below), whose sum is σ = 222294960. Its totient is φ = 55573728.

The previous prime is 129672041. The next prime is 129672071. The reversal of 129672046 is 640276921.

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

It is a super-2 number, since 2×129672046² = 33629679027652232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129671996 and 129672014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129672041) 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 3 ways as a sum of consecutive naturals, for example, 4631131 + ... + 4631158.

It is an arithmetic number, because the mean of its divisors is an integer number (27786870).

Almost surely, 2^129672046 is an apocalyptic number.

129672046 is a deficient number, since it is larger than the sum of its proper divisors (92622914).

129672046 is an equidigital number, since it uses as much as digits as its factorization.

129672046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9262298.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 129672046 is about 11387.3634349660. The cubic root of 129672046 is about 506.1533564235.

The spelling of 129672046 in words is "one hundred twenty-nine million, six hundred seventy-two thousand, forty-six".