123986001 has 16 divisors (see below), whose sum is σ = 178721600. Its totient is φ = 76189248.

The previous prime is 123985999. The next prime is 123986021. The reversal of 123986001 is 100689321.

It is not a de Polignac number, because 123986001 - 2¹ = 123985999 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123986001.

It is not an unprimeable number, because it can be changed into a prime (123986021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27286 + ... + 31503.

It is an arithmetic number, because the mean of its divisors is an integer number (11170100).

Almost surely, 2^123986001 is an apocalyptic number.

It is an amenable number.

123986001 is a deficient number, since it is larger than the sum of its proper divisors (54735599).

123986001 is a wasteful number, since it uses less digits than its factorization.

123986001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58848.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 123986001 is about 11134.9001342625. The cubic root of 123986001 is about 498.6443289675.

The spelling of 123986001 in words is "one hundred twenty-three million, nine hundred eighty-six thousand, one".