123740860 has 24 divisors (see below), whose sum is σ = 263148480. Its totient is φ = 48869184.

The previous prime is 123740791. The next prime is 123740861. The reversal of 123740860 is 68047321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123740861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37579 + ... + 40738.

It is an arithmetic number, because the mean of its divisors is an integer number (10964520).

Almost surely, 2^123740860 is an apocalyptic number.

123740860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123740860 is an abundant number, since it is smaller than the sum of its proper divisors (139407620).

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

123740860 is a wasteful number, since it uses less digits than its factorization.

123740860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78405 (or 78403 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 123740860 is about 11123.8869106082. The cubic root of 123740860 is about 498.3154778100.

The spelling of 123740860 in words is "one hundred twenty-three million, seven hundred forty thousand, eight hundred sixty".