456145121 has 4 divisors (see below), whose sum is σ = 458781972. Its totient is φ = 453508272.

The previous prime is 456145117. The next prime is 456145133. The reversal of 456145121 is 121541654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 386672896 + 69472225 = 19664^2 + 8335^2 .

It is a cyclic number.

It is not a de Polignac number, because 456145121 - 2² = 456145117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (456145171) 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, 1318166 + ... + 1318511.

It is an arithmetic number, because the mean of its divisors is an integer number (114695493).

Almost surely, 2^456145121 is an apocalyptic number.

It is an amenable number.

456145121 is a deficient number, since it is larger than the sum of its proper divisors (2636851).

456145121 is a wasteful number, since it uses less digits than its factorization.

456145121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636850.

The product of its digits is 4800, while the sum is 29.

The square root of 456145121 is about 21357.5541904966. The cubic root of 456145121 is about 769.7818693981.

Adding to 456145121 its reverse (121541654), we get a palindrome (577686775).

The spelling of 456145121 in words is "four hundred fifty-six million, one hundred forty-five thousand, one hundred twenty-one".