458012021 has 4 divisors (see below), whose sum is σ = 459665772. Its totient is φ = 456358272.

The previous prime is 458011997. The next prime is 458012077. The reversal of 458012021 is 120210854.

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 41280625 + 416731396 = 6425^2 + 20414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-458012021 is a prime.

It is a super-2 number, since 2×458012021² = 419550022761008882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (458014021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826460 + ... + 827013.

It is an arithmetic number, because the mean of its divisors is an integer number (114916443).

Almost surely, 2^458012021 is an apocalyptic number.

It is an amenable number.

458012021 is a deficient number, since it is larger than the sum of its proper divisors (1653751).

458012021 is a wasteful number, since it uses less digits than its factorization.

458012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653750.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 458012021 is about 21401.2154094107. The cubic root of 458012021 is about 770.8306216244.

Adding to 458012021 its reverse (120210854), we get a palindrome (578222875).

The spelling of 458012021 in words is "four hundred fifty-eight million, twelve thousand, twenty-one".