123400024212 has 24 divisors (see below), whose sum is σ = 300452233536. Its totient is φ = 39344935168.

The previous prime is 123400024177. The next prime is 123400024213. The reversal of 123400024212 is 212420004321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123400024213) 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, 223550493 + ... + 223551044.

It is an arithmetic number, because the mean of its divisors is an integer number (12518843064).

Almost surely, 2^123400024212 is an apocalyptic number.

123400024212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123400024212 is an abundant number, since it is smaller than the sum of its proper divisors (177052209324).

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

123400024212 is a wasteful number, since it uses less digits than its factorization.

123400024212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447101567 (or 447101565 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 123400024212 its reverse (212420004321), we get a palindrome (335820028533).

The spelling of 123400024212 in words is "one hundred twenty-three billion, four hundred million, twenty-four thousand, two hundred twelve".