129382420519 has 4 divisors (see below), whose sum is σ = 141144458760. Its totient is φ = 117620382280.

The previous prime is 129382420481. The next prime is 129382420537. The reversal of 129382420519 is 915024283921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129382420519 - 2¹⁷ = 129382289447 is a prime.

It is a super-2 number, since 2×129382420519² (a number of 23 digits) 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 (129382420589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5881019104 + ... + 5881019125.

It is an arithmetic number, because the mean of its divisors is an integer number (35286114690).

Almost surely, 2^129382420519 is an apocalyptic number.

129382420519 is a deficient number, since it is larger than the sum of its proper divisors (11762038241).

129382420519 is a wasteful number, since it uses less digits than its factorization.

129382420519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11762038240.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 129382420519 in words is "one hundred twenty-nine billion, three hundred eighty-two million, four hundred twenty thousand, five hundred nineteen".