401121013 has 8 divisors (see below), whose sum is σ = 409519800. Its totient is φ = 392753088.

The previous prime is 401120987. The next prime is 401121023. The reversal of 401121013 is 310121104.

It can be written as a sum of positive squares in 4 ways, for example, as 104489284 + 296631729 = 10222^2 + 17223^2 .

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 401121013 - 2¹³ = 401112821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401120984 and 401121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401121023) 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 7 ways as a sum of consecutive naturals, for example, 19543 + ... + 34411.

It is an arithmetic number, because the mean of its divisors is an integer number (51189975).

Almost surely, 2^401121013 is an apocalyptic number.

It is an amenable number.

401121013 is a deficient number, since it is larger than the sum of its proper divisors (8398787).

401121013 is a wasteful number, since it uses less digits than its factorization.

401121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15431.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 401121013 is about 20028.0057169954. The cubic root of 401121013 is about 737.4939655927.

Adding to 401121013 its reverse (310121104), we get a palindrome (711242117).

Subtracting from 401121013 its reverse (310121104), we obtain a palindrome (90999909).

The spelling of 401121013 in words is "four hundred one million, one hundred twenty-one thousand, thirteen".