123410240 has 28 divisors (see below), whose sum is σ = 293871396. Its totient is φ = 49363968.

The previous prime is 123410237. The next prime is 123410251. The reversal of 123410240 is 42014321.

It can be written as a sum of positive squares in 2 ways, for example, as 98089216 + 25321024 = 9904^2 + 5032^2 .

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 3 ways as a sum of consecutive naturals, for example, 192509 + ... + 193148.

It is an arithmetic number, because the mean of its divisors is an integer number (10495407).

Almost surely, 2^123410240 is an apocalyptic number.

123410240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123410240 is an abundant number, since it is smaller than the sum of its proper divisors (170461156).

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

123410240 is an equidigital number, since it uses as much as digits as its factorization.

123410240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385674 (or 385664 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123410240 is about 11109.0161580583. The cubic root of 123410240 is about 497.8712698779.

Adding to 123410240 its reverse (42014321), we get a palindrome (165424561).

The spelling of 123410240 in words is "one hundred twenty-three million, four hundred ten thousand, two hundred forty".