12020459834 has 4 divisors (see below), whose sum is σ = 18030689754. Its totient is φ = 6010229916.

The previous prime is 12020459833. The next prime is 12020459861. The reversal of 12020459834 is 43895402021.

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

It can be written as a sum of positive squares in only one way, i.e., 6742873225 + 5277586609 = 82115^2 + 72647^2 .

It is not an unprimeable number, because it can be changed into a prime (12020459831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005114957 + ... + 3005114960.

Almost surely, 2^12020459834 is an apocalyptic number.

12020459834 is a deficient number, since it is larger than the sum of its proper divisors (6010229920).

12020459834 is an equidigital number, since it uses as much as digits as its factorization.

12020459834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6010229919.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 12020459834 in words is "twelve billion, twenty million, four hundred fifty-nine thousand, eight hundred thirty-four".