403121144 has 16 divisors (see below), whose sum is σ = 756695520. Its totient is φ = 201335680.

The previous prime is 403121129. The next prime is 403121149. The reversal of 403121144 is 441121304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403121149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20369 + ... + 34944.

It is an arithmetic number, because the mean of its divisors is an integer number (47293470).

Almost surely, 2^403121144 is an apocalyptic number.

It is an amenable number.

403121144 is a deficient number, since it is larger than the sum of its proper divisors (353574376).

403121144 is a wasteful number, since it uses less digits than its factorization.

403121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56230 (or 56226 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 403121144 is about 20077.8769794020. The cubic root of 403121144 is about 738.7177355610.

Adding to 403121144 its reverse (441121304), we get a palindrome (844242448).

The spelling of 403121144 in words is "four hundred three million, one hundred twenty-one thousand, one hundred forty-four".