123775580 has 12 divisors (see below), whose sum is σ = 259928760. Its totient is φ = 49510224.

The previous prime is 123775579. The next prime is 123775621. The reversal of 123775580 is 85577321.

It is a happy number.

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, 3094370 + ... + 3094409.

It is an arithmetic number, because the mean of its divisors is an integer number (21660730).

Almost surely, 2^123775580 is an apocalyptic number.

123775580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123775580 is an abundant number, since it is smaller than the sum of its proper divisors (136153180).

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

123775580 is a wasteful number, since it uses less digits than its factorization.

123775580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188788 (or 6188786 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 123775580 is about 11125.4474067338. The cubic root of 123775580 is about 498.3620802970.

The spelling of 123775580 in words is "one hundred twenty-three million, seven hundred seventy-five thousand, five hundred eighty".