123513340 has 24 divisors (see below), whose sum is σ = 262664640. Its totient is φ = 48779328.

The previous prime is 123513311. The next prime is 123513359. The reversal of 123513340 is 43315321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37507 + ... + 40666.

It is an arithmetic number, because the mean of its divisors is an integer number (10944360).

Almost surely, 2^123513340 is an apocalyptic number.

123513340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123513340 is an abundant number, since it is smaller than the sum of its proper divisors (139151300).

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

123513340 is a wasteful number, since it uses less digits than its factorization.

123513340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78261 (or 78259 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 123513340 is about 11113.6555642147. The cubic root of 123513340 is about 498.0098759889.

Adding to 123513340 its reverse (43315321), we get a palindrome (166828661).

The spelling of 123513340 in words is "one hundred twenty-three million, five hundred thirteen thousand, three hundred forty".