123434021013 has 8 divisors (see below), whose sum is σ = 164595580800. Its totient is φ = 82280904288.

The previous prime is 123434020993. The next prime is 123434021059. The reversal of 123434021013 is 310120434321.

It is a happy number.

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

It is not a de Polignac number, because 123434021013 - 2⁵ = 123434020981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123434021813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2076573 + ... + 2135186.

It is an arithmetic number, because the mean of its divisors is an integer number (20574447600).

Almost surely, 2^123434021013 is an apocalyptic number.

It is an amenable number.

123434021013 is a deficient number, since it is larger than the sum of its proper divisors (41161559787).

123434021013 is an equidigital number, since it uses as much as digits as its factorization.

123434021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221531.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123434021013 its reverse (310120434321), we get a palindrome (433554455334).

The spelling of 123434021013 in words is "one hundred twenty-three billion, four hundred thirty-four million, twenty-one thousand, thirteen".