123020135234 has 8 divisors (see below), whose sum is σ = 184784029248. Its totient is φ = 61425458820.

The previous prime is 123020135209. The next prime is 123020135239. The reversal of 123020135234 is 432531020321.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (123020135239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42302582 + ... + 42305489.

It is an arithmetic number, because the mean of its divisors is an integer number (23098003656).

Almost surely, 2^123020135234 is an apocalyptic number.

123020135234 is a deficient number, since it is larger than the sum of its proper divisors (61763894014).

123020135234 is an equidigital number, since it uses as much as digits as its factorization.

123020135234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84608800.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 123020135234 its reverse (432531020321), we get a palindrome (555551155555).

The spelling of 123020135234 in words is "one hundred twenty-three billion, twenty million, one hundred thirty-five thousand, two hundred thirty-four".