123254340 has 144 divisors (see below), whose sum is σ = 389261376. Its totient is φ = 28896000.

The previous prime is 123254333. The next prime is 123254359. The reversal of 123254340 is 43452321.

It is a self number, because there is not a number n which added to its sum of digits gives 123254340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1220290 + ... + 1220390.

It is an arithmetic number, because the mean of its divisors is an integer number (2703204).

Almost surely, 2^123254340 is an apocalyptic number.

123254340 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 123254340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194630688).

123254340 is an abundant number, since it is smaller than the sum of its proper divisors (266007036).

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

123254340 is a wasteful number, since it uses less digits than its factorization.

123254340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 123254340 is about 11101.9971176361. The cubic root of 123254340 is about 497.6615335328.

The spelling of 123254340 in words is "one hundred twenty-three million, two hundred fifty-four thousand, three hundred forty".