403013121 has 16 divisors (see below), whose sum is σ = 614473728. Its totient is φ = 230158800.

The previous prime is 403013089. The next prime is 403013131. The reversal of 403013121 is 121310304.

It is not a de Polignac number, because 403013121 - 2⁵ = 403013089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 403013121.

It is not an unprimeable number, because it can be changed into a prime (403013131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39786 + ... + 48876.

It is an arithmetic number, because the mean of its divisors is an integer number (38404608).

Almost surely, 2^403013121 is an apocalyptic number.

It is an amenable number.

403013121 is a deficient number, since it is larger than the sum of its proper divisors (211460607).

403013121 is a wasteful number, since it uses less digits than its factorization.

403013121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11212.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 403013121 is about 20075.1866990073. The cubic root of 403013121 is about 738.6517457744.

Adding to 403013121 its reverse (121310304), we get a palindrome (524323425).

The spelling of 403013121 in words is "four hundred three million, thirteen thousand, one hundred twenty-one".