123732740 has 48 divisors (see below), whose sum is σ = 267342768. Its totient is φ = 48082944.

The previous prime is 123732703. The next prime is 123732743. The reversal of 123732740 is 47237321.

It can be written as a sum of positive squares in 8 ways, for example, as 33856 + 123698884 = 184^2 + 11122^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (123732743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119264 + ... + 120296.

It is an arithmetic number, because the mean of its divisors is an integer number (5569641).

Almost surely, 2^123732740 is an apocalyptic number.

123732740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123732740 is an abundant number, since it is smaller than the sum of its proper divisors (143610028).

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

123732740 is a wasteful number, since it uses less digits than its factorization.

123732740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 123732740 is about 11123.5219242828. The cubic root of 123732740 is about 498.3045775836.

The spelling of 123732740 in words is "one hundred twenty-three million, seven hundred thirty-two thousand, seven hundred forty".