123641065 has 16 divisors (see below), whose sum is σ = 154529280. Its totient is φ = 94852800.

The previous prime is 123641059. The next prime is 123641071. The reversal of 123641065 is 560146321.

It is an interprime number because it is at equal distance from previous prime (123641059) and next prime (123641071).

It is not a de Polignac number, because 123641065 - 2¹⁵ = 123608297 is a prime.

It is a super-2 number, since 2×123641065² = 30574225908668450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19072 + ... + 24718.

It is an arithmetic number, because the mean of its divisors is an integer number (9658080).

Almost surely, 2^123641065 is an apocalyptic number.

It is an amenable number.

123641065 is a deficient number, since it is larger than the sum of its proper divisors (30888215).

123641065 is a wasteful number, since it uses less digits than its factorization.

123641065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 123641065 is about 11119.4003885102. The cubic root of 123641065 is about 498.1814806600.

Adding to 123641065 its reverse (560146321), we get a palindrome (683787386).

The spelling of 123641065 in words is "one hundred twenty-three million, six hundred forty-one thousand, sixty-five".