123966740 has 24 divisors (see below), whose sum is σ = 260851752. Its totient is φ = 49487360.

The previous prime is 123966727. The next prime is 123966833. The reversal of 123966740 is 47669321.

It can be written as a sum of positive squares in 4 ways, for example, as 35832196 + 88134544 = 5986^2 + 9388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123966694 and 123966703.

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 7 ways as a sum of consecutive naturals, for example, 4472 + ... + 16368.

It is an arithmetic number, because the mean of its divisors is an integer number (10868823).

Almost surely, 2^123966740 is an apocalyptic number.

123966740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123966740 is an abundant number, since it is smaller than the sum of its proper divisors (136885012).

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

123966740 is a wasteful number, since it uses less digits than its factorization.

123966740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427 (or 12425 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 123966740 is about 11134.0352074169. The cubic root of 123966740 is about 498.6185064667.

The spelling of 123966740 in words is "one hundred twenty-three million, nine hundred sixty-six thousand, seven hundred forty".