123945908 has 6 divisors (see below), whose sum is σ = 216905346. Its totient is φ = 61972952.

The previous prime is 123945901. The next prime is 123945917. The reversal of 123945908 is 809549321.

It can be written as a sum of positive squares in only one way, i.e., 120604324 + 3341584 = 10982^2 + 1828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123945901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15493235 + ... + 15493242.

It is an arithmetic number, because the mean of its divisors is an integer number (36150891).

Almost surely, 2^123945908 is an apocalyptic number.

It is an amenable number.

123945908 is a deficient number, since it is larger than the sum of its proper divisors (92959438).

123945908 is a wasteful number, since it uses less digits than its factorization.

123945908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30986481 (or 30986479 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 123945908 is about 11133.0996582264. The cubic root of 123945908 is about 498.5905747741.

The spelling of 123945908 in words is "one hundred twenty-three million, nine hundred forty-five thousand, nine hundred eight".