123405320020234 has 32 divisors (see below), whose sum is σ = 211593200173056. Its totient is φ = 52877689516080.

The previous prime is 123405320020219. The next prime is 123405320020237. The reversal of 123405320020234 is 432020023504321.

It is a junction number, because it is equal to n+sod(n) for n = 123405320020196 and 123405320020205.

It is not an unprimeable number, because it can be changed into a prime (123405320020237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2462024697 + ... + 2462074819.

It is an arithmetic number, because the mean of its divisors is an integer number (6612287505408).

Almost surely, 2^{123405320020234} is an apocalyptic number.

123405320020234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123405320020234 is a deficient number, since it is larger than the sum of its proper divisors (88187880152822).

123405320020234 is a wasteful number, since it uses less digits than its factorization.

123405320020234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80890.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 123405320020234 its reverse (432020023504321), we get a palindrome (555425343524555).

The spelling of 123405320020234 in words is "one hundred twenty-three trillion, four hundred five billion, three hundred twenty million, twenty thousand, two hundred thirty-four".