123516740 has 12 divisors (see below), whose sum is σ = 259385196. Its totient is φ = 49406688.

The previous prime is 123516727. The next prime is 123516749. The reversal of 123516740 is 47615321.

It can be written as a sum of positive squares in 2 ways, for example, as 59228416 + 64288324 = 7696^2 + 8018^2 .

It is not an unprimeable number, because it can be changed into a prime (123516749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3087899 + ... + 3087938.

It is an arithmetic number, because the mean of its divisors is an integer number (21615433).

Almost surely, 2^123516740 is an apocalyptic number.

123516740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123516740 is an abundant number, since it is smaller than the sum of its proper divisors (135868456).

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

123516740 is a wasteful number, since it uses less digits than its factorization.

123516740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6175846 (or 6175844 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 123516740 is about 11113.8085281329. The cubic root of 123516740 is about 498.0144455845.

It can be divided in two parts, 12351 and 6740, that added together give a palindrome (19091).

The spelling of 123516740 in words is "one hundred twenty-three million, five hundred sixteen thousand, seven hundred forty".