123420352113 has 6 divisors (see below), whose sum is σ = 178273841954. Its totient is φ = 82280234736.

The previous prime is 123420352109. The next prime is 123420352127. The reversal of 123420352113 is 311253024321.

123420352113 is a `hidden beast` number, since 1 + 23 + 420 + 3 + 5 + 211 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 90972814689 + 32447537424 = 301617^2 + 180132^2 .

It is not a de Polignac number, because 123420352113 - 2² = 123420352109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123420352193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6856686220 + ... + 6856686237.

Almost surely, 2^123420352113 is an apocalyptic number.

It is an amenable number.

123420352113 is a deficient number, since it is larger than the sum of its proper divisors (54853489841).

123420352113 is a wasteful number, since it uses less digits than its factorization.

123420352113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13713372463 (or 13713372460 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 123420352113 its reverse (311253024321), we get a palindrome (434673376434).

The spelling of 123420352113 in words is "one hundred twenty-three billion, four hundred twenty million, three hundred fifty-two thousand, one hundred thirteen".