123421543160 has 64 divisors (see below), whose sum is σ = 283688507520. Its totient is φ = 48304327680.

The previous prime is 123421543109. The next prime is 123421543241. The reversal of 123421543160 is 61345124321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8635220 + ... + 8649500.

It is an arithmetic number, because the mean of its divisors is an integer number (4432632930).

Almost surely, 2^123421543160 is an apocalyptic number.

123421543160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123421543160 is an abundant number, since it is smaller than the sum of its proper divisors (160266964360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123421543160 is a wasteful number, since it uses less digits than its factorization.

123421543160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18936 (or 18932 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 123421543160 its reverse (61345124321), we get a palindrome (184766667481).

The spelling of 123421543160 in words is "one hundred twenty-three billion, four hundred twenty-one million, five hundred forty-three thousand, one hundred sixty".