123451117340 has 12 divisors (see below), whose sum is σ = 259247346456. Its totient is φ = 49380446928.

The previous prime is 123451117337. The next prime is 123451117357. The reversal of 123451117340 is 43711154321.

It is a junction number, because it is equal to n+sod(n) for n = 123451117297 and 123451117306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3086277914 + ... + 3086277953.

It is an arithmetic number, because the mean of its divisors is an integer number (21603945538).

Almost surely, 2^123451117340 is an apocalyptic number.

123451117340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123451117340 is an abundant number, since it is smaller than the sum of its proper divisors (135796229116).

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

123451117340 is a wasteful number, since it uses less digits than its factorization.

123451117340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6172555876 (or 6172555874 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 123451117340 in words is "one hundred twenty-three billion, four hundred fifty-one million, one hundred seventeen thousand, three hundred forty".