123254360440 has 128 divisors (see below), whose sum is σ = 291670632000. Its totient is φ = 46810165248.

The previous prime is 123254360431. The next prime is 123254360491. The reversal of 123254360440 is 44063452321.

123254360440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 123254360396 and 123254360405.

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, 64428924 + ... + 64430836.

Almost surely, 2^123254360440 is an apocalyptic number.

123254360440 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 123254360440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145835316000).

123254360440 is an abundant number, since it is smaller than the sum of its proper divisors (168416271560).

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

123254360440 is a wasteful number, since it uses less digits than its factorization.

123254360440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 123254360440 in words is "one hundred twenty-three billion, two hundred fifty-four million, three hundred sixty thousand, four hundred forty".