401960121 has 48 divisors (see below), whose sum is σ = 607751424. Its totient is φ = 235366912.

The previous prime is 401960113. The next prime is 401960123. The reversal of 401960121 is 121069104.

It is not a de Polignac number, because 401960121 - 2³ = 401960113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401960091 and 401960100.

It is not an unprimeable number, because it can be changed into a prime (401960123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1267855 + ... + 1268171.

It is an arithmetic number, because the mean of its divisors is an integer number (12661488).

Almost surely, 2^401960121 is an apocalyptic number.

It is an amenable number.

401960121 is a deficient number, since it is larger than the sum of its proper divisors (205791303).

401960121 is a wasteful number, since it uses less digits than its factorization.

401960121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 401960121 is about 20048.9431392281. The cubic root of 401960121 is about 738.0078637686.

The spelling of 401960121 in words is "four hundred one million, nine hundred sixty thousand, one hundred twenty-one".