123450540 has 48 divisors (see below), whose sum is σ = 350542080. Its totient is φ = 32455360.

The previous prime is 123450539. The next prime is 123450541. The reversal of 123450540 is 45054321.

It is an interprime number because it is at equal distance from previous prime (123450539) and next prime (123450541).

It is a self number, because there is not a number n which added to its sum of digits gives 123450540.

It is not an unprimeable number, because it can be changed into a prime (123450541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10230 + ... + 18749.

It is an arithmetic number, because the mean of its divisors is an integer number (7302960).

Almost surely, 2^123450540 is an apocalyptic number.

123450540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123450540 is an abundant number, since it is smaller than the sum of its proper divisors (227091540).

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

123450540 is a wasteful number, since it uses less digits than its factorization.

123450540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29062 (or 29060 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 123450540 is about 11110.8298519958. The cubic root of 123450540 is about 497.9254577869.

The spelling of 123450540 in words is "one hundred twenty-three million, four hundred fifty thousand, five hundred forty".