129938212946 has 8 divisors (see below), whose sum is σ = 199661156604. Its totient is φ = 63384494080.

The previous prime is 129938212897. The next prime is 129938212949. The reversal of 129938212946 is 649212839921.

It can be written as a sum of positive squares in 2 ways, for example, as 113761171225 + 16177041721 = 337285^2 + 127189^2 .

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 = 129938212891 and 129938212900.

It is not an unprimeable number, because it can be changed into a prime (129938212949) 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, 792306095 + ... + 792306258.

Almost surely, 2^129938212946 is an apocalyptic number.

129938212946 is a deficient number, since it is larger than the sum of its proper divisors (69722943658).

129938212946 is a wasteful number, since it uses less digits than its factorization.

129938212946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584612396.

The product of its digits is 3359232, while the sum is 56.

The spelling of 129938212946 in words is "one hundred twenty-nine billion, nine hundred thirty-eight million, two hundred twelve thousand, nine hundred forty-six".