450121 has 4 divisors (see below), whose sum is σ = 514432. Its totient is φ = 385812.

The previous prime is 450113. The next prime is 450127. The reversal of 450121 is 121054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121054 = 2 ⋅60527.

It is not a de Polignac number, because 450121 - 2³ = 450113 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450127) 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 3 ways as a sum of consecutive naturals, for example, 32145 + ... + 32158.

It is an arithmetic number, because the mean of its divisors is an integer number (128608).

2⁴⁵⁰¹²¹ is an apocalyptic number.

It is an amenable number.

450121 is a deficient number, since it is larger than the sum of its proper divisors (64311).

450121 is an equidigital number, since it uses as much as digits as its factorization.

450121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64310.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 450121 is about 670.9105752632. The cubic root of 450121 is about 76.6378110269.

Adding to 450121 its reverse (121054), we get a palindrome (571175).

The spelling of 450121 in words is "four hundred fifty thousand, one hundred twenty-one".