423453502021 has 8 divisors (see below), whose sum is σ = 482034026304. Its totient is φ = 368220436320.

The previous prime is 423453502007. The next prime is 423453502033. The reversal of 423453502021 is 120205354324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423453502021 - 2¹⁹ = 423452977733 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 (423453502081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836864376 + ... + 836864881.

It is an arithmetic number, because the mean of its divisors is an integer number (60254253288).

Almost surely, 2^423453502021 is an apocalyptic number.

It is an amenable number.

423453502021 is a deficient number, since it is larger than the sum of its proper divisors (58580524283).

423453502021 is a wasteful number, since it uses less digits than its factorization.

423453502021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673729291.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 423453502021 its reverse (120205354324), we get a palindrome (543658856345).

The spelling of 423453502021 in words is "four hundred twenty-three billion, four hundred fifty-three million, five hundred two thousand, twenty-one".