423362021 has 4 divisors (see below), whose sum is σ = 430302444. Its totient is φ = 416421600.

The previous prime is 423361997. The next prime is 423362083. The reversal of 423362021 is 120263324.

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 38613796 + 384748225 = 6214^2 + 19615^2 .

It is a cyclic number.

It is not a de Polignac number, because 423362021 - 2⁶ = 423361957 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 (423362221) 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, 3470120 + ... + 3470241.

It is an arithmetic number, because the mean of its divisors is an integer number (107575611).

Almost surely, 2^423362021 is an apocalyptic number.

It is an amenable number.

423362021 is a deficient number, since it is larger than the sum of its proper divisors (6940423).

423362021 is an equidigital number, since it uses as much as digits as its factorization.

423362021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940422.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 423362021 is about 20575.7629506174. The cubic root of 423362021 is about 750.8801643066.

The spelling of 423362021 in words is "four hundred twenty-three million, three hundred sixty-two thousand, twenty-one".