123344240 has 40 divisors (see below), whose sum is σ = 287297088. Its totient is φ = 49248000.

The previous prime is 123344237. The next prime is 123344267. The reversal of 123344240 is 42443321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59054 + ... + 61106.

Almost surely, 2^123344240 is an apocalyptic number.

123344240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123344240 is an abundant number, since it is smaller than the sum of its proper divisors (163952848).

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

123344240 is a wasteful number, since it uses less digits than its factorization.

123344240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817 (or 2811 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 123344240 is about 11106.0452007004. The cubic root of 123344240 is about 497.7824999257.

Adding to 123344240 its reverse (42443321), we get a palindrome (165787561).

The spelling of 123344240 in words is "one hundred twenty-three million, three hundred forty-four thousand, two hundred forty".