20120430012239 has 4 divisors (see below), whose sum is σ = 20319642190680. Its totient is φ = 19921217833800.

The previous prime is 20120430012233. The next prime is 20120430012283. The reversal of 20120430012239 is 93221003402102.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120430012239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120430012233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99606089069 + ... + 99606089270.

It is an arithmetic number, because the mean of its divisors is an integer number (5079910547670).

Almost surely, 2^{20120430012239} is an apocalyptic number.

20120430012239 is a deficient number, since it is larger than the sum of its proper divisors (199212178441).

20120430012239 is a wasteful number, since it uses less digits than its factorization.

20120430012239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199212178440.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 20120430012239 in words is "twenty trillion, one hundred twenty billion, four hundred thirty million, twelve thousand, two hundred thirty-nine".