123423417340 has 96 divisors (see below), whose sum is σ = 275781905280. Its totient is φ = 46237999104.

The previous prime is 123423417331. The next prime is 123423417389. The reversal of 123423417340 is 43714324321.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 123423417296 and 123423417305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76802817 + ... + 76804423.

It is an arithmetic number, because the mean of its divisors is an integer number (2872728180).

Almost surely, 2^123423417340 is an apocalyptic number.

123423417340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123423417340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137890952640).

123423417340 is an abundant number, since it is smaller than the sum of its proper divisors (152358487940).

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

123423417340 is a wasteful number, since it uses less digits than its factorization.

123423417340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599 (or 2597 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The spelling of 123423417340 in words is "one hundred twenty-three billion, four hundred twenty-three million, four hundred seventeen thousand, three hundred forty".