466420021 has 4 divisors (see below), whose sum is σ = 482503500. Its totient is φ = 450336544.

The previous prime is 466419991. The next prime is 466420027. The reversal of 466420021 is 120024664.

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 357739396 + 108680625 = 18914^2 + 10425^2 .

It is a cyclic number.

It is not a de Polignac number, because 466420021 - 2²¹ = 464322869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (466420027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8041696 + ... + 8041753.

It is an arithmetic number, because the mean of its divisors is an integer number (120625875).

Almost surely, 2^466420021 is an apocalyptic number.

It is an amenable number.

466420021 is a deficient number, since it is larger than the sum of its proper divisors (16083479).

466420021 is a wasteful number, since it uses less digits than its factorization.

466420021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16083478.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 466420021 is about 21596.7595022957. The cubic root of 466420021 is about 775.5189149088.

Adding to 466420021 its reverse (120024664), we get a palindrome (586444685).

The spelling of 466420021 in words is "four hundred sixty-six million, four hundred twenty thousand, twenty-one".