123679601 has 4 divisors (see below), whose sum is σ = 123743652. Its totient is φ = 123615552.

The previous prime is 123679597. The next prime is 123679609. The reversal of 123679601 is 106976321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106976321 = 3623 ⋅29527.

It can be written as a sum of positive squares in 2 ways, for example, as 69288976 + 54390625 = 8324^2 + 7375^2 .

It is a cyclic number.

It is not a de Polignac number, because 123679601 - 2² = 123679597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123679609) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 29036 + ... + 33021.

It is an arithmetic number, because the mean of its divisors is an integer number (30935913).

Almost surely, 2^123679601 is an apocalyptic number.

It is an amenable number.

123679601 is a deficient number, since it is larger than the sum of its proper divisors (64051).

123679601 is an equidigital number, since it uses as much as digits as its factorization.

123679601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64050.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 123679601 is about 11121.1330807612. The cubic root of 123679601 is about 498.2332324178.

The spelling of 123679601 in words is "one hundred twenty-three million, six hundred seventy-nine thousand, six hundred one".