123125864 has 8 divisors (see below), whose sum is σ = 230861010. Its totient is φ = 61562928.

The previous prime is 123125843. The next prime is 123125881. The reversal of 123125864 is 468521321.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 58644964 = 8030^2 + 7658^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 123125864.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7695359 + ... + 7695374.

Almost surely, 2^123125864 is an apocalyptic number.

It is an amenable number.

123125864 is a deficient number, since it is larger than the sum of its proper divisors (107735146).

123125864 is a wasteful number, since it uses less digits than its factorization.

123125864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15390739 (or 15390735 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 123125864 is about 11096.2094428683. The cubic root of 123125864 is about 497.4885584433.

The spelling of 123125864 in words is "one hundred twenty-three million, one hundred twenty-five thousand, eight hundred sixty-four".