123421314340 has 48 divisors (see below), whose sum is σ = 259669557504. Its totient is φ = 49276281600.

The previous prime is 123421314337. The next prime is 123421314353. The reversal of 123421314340 is 43413124321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123421314299 and 123421314308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43198192 + ... + 43201048.

It is an arithmetic number, because the mean of its divisors is an integer number (5409782448).

Almost surely, 2^123421314340 is an apocalyptic number.

123421314340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123421314340 is an abundant number, since it is smaller than the sum of its proper divisors (136248243164).

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

123421314340 is a wasteful number, since it uses less digits than its factorization.

123421314340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6148 (or 6146 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 123421314340 its reverse (43413124321), we get a palindrome (166834438661).

The spelling of 123421314340 in words is "one hundred twenty-three billion, four hundred twenty-one million, three hundred fourteen thousand, three hundred forty".