123125001 has 4 divisors (see below), whose sum is σ = 164166672. Its totient is φ = 82083332.

The previous prime is 123124993. The next prime is 123125053. The reversal of 123125001 is 100521321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100521321 = 3 ⋅33507107.

It is a cyclic number.

It is not a de Polignac number, because 123125001 - 2³ = 123124993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123125071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20520831 + ... + 20520836.

It is an arithmetic number, because the mean of its divisors is an integer number (41041668).

Almost surely, 2^123125001 is an apocalyptic number.

It is an amenable number.

123125001 is a deficient number, since it is larger than the sum of its proper divisors (41041671).

123125001 is an equidigital number, since it uses as much as digits as its factorization.

123125001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41041670.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 123125001 is about 11096.1705556467. The cubic root of 123125001 is about 497.4873961269.

Adding to 123125001 its reverse (100521321), we get a palindrome (223646322).

The spelling of 123125001 in words is "one hundred twenty-three million, one hundred twenty-five thousand, one".