123905965 has 8 divisors (see below), whose sum is σ = 149310720. Its totient is φ = 98709072.

The previous prime is 123905963. The next prime is 123905983. The reversal of 123905965 is 569509321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123905965 - 2¹ = 123905963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123905963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50649 + ... + 53038.

It is an arithmetic number, because the mean of its divisors is an integer number (18663840).

Almost surely, 2^123905965 is an apocalyptic number.

It is an amenable number.

123905965 is a deficient number, since it is larger than the sum of its proper divisors (25404755).

123905965 is a wasteful number, since it uses less digits than its factorization.

123905965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103931.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 123905965 is about 11131.3056287212. The cubic root of 123905965 is about 498.5370101632.

The spelling of 123905965 in words is "one hundred twenty-three million, nine hundred five thousand, nine hundred sixty-five".