123246240 has 96 divisors (see below), whose sum is σ = 418110336. Its totient is φ = 30336000.

The previous prime is 123246239. The next prime is 123246247. The reversal of 123246240 is 42642321.

It is a tau number, because it is divible by the number of its divisors (96).

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 123246240.

It is not an unprimeable number, because it can be changed into a prime (123246247) 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, 3636 + ... + 16115.

It is an arithmetic number, because the mean of its divisors is an integer number (4355316).

Almost surely, 2^123246240 is an apocalyptic number.

123246240 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 123246240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209055168).

123246240 is an abundant number, since it is smaller than the sum of its proper divisors (294864096).

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

123246240 is a wasteful number, since it uses less digits than its factorization.

123246240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19782 (or 19774 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 123246240 is about 11101.6323124124. The cubic root of 123246240 is about 497.6506315591.

Adding to 123246240 its reverse (42642321), we get a palindrome (165888561).

The spelling of 123246240 in words is "one hundred twenty-three million, two hundred forty-six thousand, two hundred forty".