123740568 has 64 divisors (see below), whose sum is σ = 392832000. Its totient is φ = 35354016.

The previous prime is 123740509. The next prime is 123740579. The reversal of 123740568 is 865047321.

123740568 is a `hidden beast` number, since 1 + 23 + 74 + 0 + 568 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39408 + ... + 42431.

It is an arithmetic number, because the mean of its divisors is an integer number (6138000).

Almost surely, 2^123740568 is an apocalyptic number.

123740568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123740568 is an abundant number, since it is smaller than the sum of its proper divisors (269091432).

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

123740568 is a wasteful number, since it uses less digits than its factorization.

123740568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81861 (or 81851 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 123740568 is about 11123.8737856917. The cubic root of 123740568 is about 498.3150858397.

Adding to 123740568 its reverse (865047321), we get a palindrome (988787889).

The spelling of 123740568 in words is "one hundred twenty-three million, seven hundred forty thousand, five hundred sixty-eight".