123772740 has 96 divisors (see below), whose sum is σ = 426558720. Its totient is φ = 26113536.

The previous prime is 123772717. The next prime is 123772757. The reversal of 123772740 is 47277321.

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 31 ways as a sum of consecutive naturals, for example, 5875 + ... + 16794.

It is an arithmetic number, because the mean of its divisors is an integer number (4443320).

Almost surely, 2^123772740 is an apocalyptic number.

123772740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123772740 is an abundant number, since it is smaller than the sum of its proper divisors (302785980).

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

123772740 is a wasteful number, since it uses less digits than its factorization.

123772740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22701 (or 22699 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 123772740 is about 11125.3197706852. The cubic root of 123772740 is about 498.3582686697.

The spelling of 123772740 in words is "one hundred twenty-three million, seven hundred seventy-two thousand, seven hundred forty".