403121 has 8 divisors (see below), whose sum is σ = 445824. Its totient is φ = 362560.

The previous prime is 403103. The next prime is 403133. The reversal of 403121 is 121304.

It is a happy number.

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 403121 - 2⁶ = 403057 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 403121.

It is not an unprimeable number, because it can be changed into a prime (403141) 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, 125 + ... + 906.

It is an arithmetic number, because the mean of its divisors is an integer number (55728).

2⁴⁰³¹²¹ is an apocalyptic number.

It is an amenable number.

403121 is a deficient number, since it is larger than the sum of its proper divisors (42703).

403121 is a wasteful number, since it uses less digits than its factorization.

403121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 403121 is about 634.9181049553. The cubic root of 403121 is about 73.8717647601.

Adding to 403121 its reverse (121304), we get a palindrome (524425).

The spelling of 403121 in words is "four hundred three thousand, one hundred twenty-one", and thus it is an iban number.