123118240 has 96 divisors (see below), whose sum is σ = 341518464. Its totient is φ = 41057280.

The previous prime is 123118231. The next prime is 123118249. The reversal of 123118240 is 42811321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123118231) and next prime (123118249).

It is not an unprimeable number, because it can be changed into a prime (123118249) 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, 39955 + ... + 42925.

It is an arithmetic number, because the mean of its divisors is an integer number (3557484).

Almost surely, 2^123118240 is an apocalyptic number.

123118240 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 123118240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170759232).

123118240 is an abundant number, since it is smaller than the sum of its proper divisors (218400224).

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

123118240 is a wasteful number, since it uses less digits than its factorization.

123118240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 123118240 is about 11095.8658968104. The cubic root of 123118240 is about 497.4782900049.

Adding to 123118240 its reverse (42811321), we get a palindrome (165929561).

The spelling of 123118240 in words is "one hundred twenty-three million, one hundred eighteen thousand, two hundred forty".