123932040 has 128 divisors (see below), whose sum is σ = 399168000. Its totient is φ = 30670848.

The previous prime is 123932033. The next prime is 123932047. The reversal of 123932040 is 40239321.

It is an interprime number because it is at equal distance from previous prime (123932033) and next prime (123932047).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 123932040.

It is not an unprimeable number, because it can be changed into a prime (123932047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160776 + ... + 161544.

It is an arithmetic number, because the mean of its divisors is an integer number (3118500).

Almost surely, 2^123932040 is an apocalyptic number.

123932040 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 123932040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199584000).

123932040 is an abundant number, since it is smaller than the sum of its proper divisors (275235960).

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

123932040 is a wasteful number, since it uses less digits than its factorization.

123932040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 123932040 is about 11132.4768133601. The cubic root of 123932040 is about 498.5719787266.

The spelling of 123932040 in words is "one hundred twenty-three million, nine hundred thirty-two thousand, forty".