423143001021 has 32 divisors (see below), whose sum is σ = 610696800000. Its totient is φ = 259067547648.

The previous prime is 423143001019. The next prime is 423143001023. The reversal of 423143001021 is 120100341324.

It is an interprime number because it is at equal distance from previous prime (423143001019) and next prime (423143001023).

It is not a de Polignac number, because 423143001021 - 2¹ = 423143001019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423143001023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6076720 + ... + 6145958.

It is an arithmetic number, because the mean of its divisors is an integer number (19084275000).

Almost surely, 2^423143001021 is an apocalyptic number.

It is an amenable number.

423143001021 is a deficient number, since it is larger than the sum of its proper divisors (187553798979).

423143001021 is a wasteful number, since it uses less digits than its factorization.

423143001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70053.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 423143001021 its reverse (120100341324), we get a palindrome (543243342345).

The spelling of 423143001021 in words is "four hundred twenty-three billion, one hundred forty-three million, one thousand, twenty-one".