423453502020 has 48 divisors (see below), whose sum is σ = 1185984192960. Its totient is φ = 112890992256.

The previous prime is 423453502007. The next prime is 423453502033. The reversal of 423453502020 is 20205354324.

It is an interprime number because it is at equal distance from previous prime (423453502007) and next prime (423453502033).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707047 + ... + 1160526.

It is an arithmetic number, because the mean of its divisors is an integer number (24708004020).

Almost surely, 2^423453502020 is an apocalyptic number.

It is an amenable number.

423453502020 is an abundant number, since it is smaller than the sum of its proper divisors (762530690940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423453502020 is a wasteful number, since it uses less digits than its factorization.

423453502020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871364 (or 1871362 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 423453502020 its reverse (20205354324), we get a palindrome (443658856344).

The spelling of 423453502020 in words is "four hundred twenty-three billion, four hundred fifty-three million, five hundred two thousand, twenty".