1423043223021 has 36 divisors (see below), whose sum is σ = 2391197998332. Its totient is φ = 813134173824.

The previous prime is 1423043222989. The next prime is 1423043223023. The reversal of 1423043223021 is 1203223403241.

1423043223021 is a `hidden beast` number, since 1 + 4 + 2 + 30 + 4 + 322 + 302 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1083837155625 + 339206067396 = 1041075^2 + 582414^2 .

It is not a de Polignac number, because 1423043223021 - 2⁵ = 1423043222989 is a prime.

It is a super-3 number, since 3×1423043223021³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423043223023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14138145 + ... + 14238441.

Almost surely, 2^{1423043223021} is an apocalyptic number.

It is an amenable number.

1423043223021 is a deficient number, since it is larger than the sum of its proper divisors (968154775311).

1423043223021 is a wasteful number, since it uses less digits than its factorization.

1423043223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132490 (or 132480 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 1423043223021 its reverse (1203223403241), we get a palindrome (2626266626262).

The spelling of 1423043223021 in words is "one trillion, four hundred twenty-three billion, forty-three million, two hundred twenty-three thousand, twenty-one".