401025121 has 8 divisors (see below), whose sum is σ = 485274240. Its totient is φ = 323515968.

The previous prime is 401025101. The next prime is 401025127. The reversal of 401025121 is 121520104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401025121 - 2⁵ = 401025089 is a prime.

It is a super-2 number, since 2×401025121² = 321642295346129282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401025095 and 401025104.

It is not an unprimeable number, because it can be changed into a prime (401025127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684861 + ... + 1685098.

It is an arithmetic number, because the mean of its divisors is an integer number (60659280).

Almost surely, 2^401025121 is an apocalyptic number.

It is an amenable number.

401025121 is a deficient number, since it is larger than the sum of its proper divisors (84249119).

401025121 is a wasteful number, since it uses less digits than its factorization.

401025121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369983.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 401025121 is about 20025.6116261152. The cubic root of 401025121 is about 737.4351924667.

Adding to 401025121 its reverse (121520104), we get a palindrome (522545225).

The spelling of 401025121 in words is "four hundred one million, twenty-five thousand, one hundred twenty-one".