401020117 has 2 divisors, whose sum is σ = 401020118. Its totient is φ = 401020116.

The previous prime is 401020079. The next prime is 401020129. The reversal of 401020117 is 711020104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290054961 + 110965156 = 17031^2 + 10534^2 .

It is a cyclic number.

It is not a de Polignac number, because 401020117 - 2⁷ = 401019989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401020117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401026117) 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 as a sum of consecutive naturals, namely, 200510058 + 200510059.

It is an arithmetic number, because the mean of its divisors is an integer number (200510059).

Almost surely, 2^401020117 is an apocalyptic number.

It is an amenable number.

401020117 is a deficient number, since it is larger than the sum of its proper divisors (1).

401020117 is an equidigital number, since it uses as much as digits as its factorization.

401020117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 401020117 is about 20025.4866857213. The cubic root of 401020117 is about 737.4321252099.

The spelling of 401020117 in words is "four hundred one million, twenty thousand, one hundred seventeen".