456121 has 4 divisors (see below), whose sum is σ = 457600. Its totient is φ = 454644.

The previous prime is 456119. The next prime is 456149. The reversal of 456121 is 121654.

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.

It is a cyclic number.

It is not a de Polignac number, because 456121 - 2¹ = 456119 is a prime.

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

It is a Duffinian number.

456121 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456151) 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, 81 + ... + 958.

It is an arithmetic number, because the mean of its divisors is an integer number (114400).

2⁴⁵⁶¹²¹ is an apocalyptic number.

It is an amenable number.

456121 is a deficient number, since it is larger than the sum of its proper divisors (1479).

456121 is a wasteful number, since it uses less digits than its factorization.

456121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478.

The product of its digits is 240, while the sum is 19.

The square root of 456121 is about 675.3673074705. The cubic root of 456121 is about 76.9768300445.

Adding to 456121 its reverse (121654), we get a palindrome (577775).

The spelling of 456121 in words is "four hundred fifty-six thousand, one hundred twenty-one".