123441440 has 24 divisors (see below), whose sum is σ = 291630780. Its totient is φ = 49376512.

The previous prime is 123441421. The next prime is 123441463. The reversal of 123441440 is 44144321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 113124496 + 10316944 = 10636^2 + 3212^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385595 + ... + 385914.

Almost surely, 2^123441440 is an apocalyptic number.

123441440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123441440 is an abundant number, since it is smaller than the sum of its proper divisors (168189340).

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

123441440 is an equidigital number, since it uses as much as digits as its factorization.

123441440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771524 (or 771516 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 123441440 is about 11110.4203340828. The cubic root of 123441440 is about 497.9132228384.

Adding to 123441440 its reverse (44144321), we get a palindrome (167585761).

The spelling of 123441440 in words is "one hundred twenty-three million, four hundred forty-one thousand, four hundred forty".