123507040 has 72 divisors (see below), whose sum is σ = 310074912. Its totient is φ = 46479360.

The previous prime is 123507037. The next prime is 123507053. The reversal of 123507040 is 40705321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44905 + ... + 47575.

It is an arithmetic number, because the mean of its divisors is an integer number (4306596).

Almost surely, 2^123507040 is an apocalyptic number.

123507040 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 123507040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155037456).

123507040 is an abundant number, since it is smaller than the sum of its proper divisors (186567872).

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

123507040 is a wasteful number, since it uses less digits than its factorization.

123507040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720 (or 2695 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 123507040 is about 11113.3721255072. The cubic root of 123507040 is about 498.0014085754.

The spelling of 123507040 in words is "one hundred twenty-three million, five hundred seven thousand, forty".