423434134221 has 16 divisors (see below), whose sum is σ = 660238385664. Its totient is φ = 236335330224.

The previous prime is 423434134213. The next prime is 423434134229. The reversal of 423434134221 is 122431434324.

It is an interprime number because it is at equal distance from previous prime (423434134213) and next prime (423434134229).

It is not a de Polignac number, because 423434134221 - 2³ = 423434134213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423434134229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234458751 + ... + 234460556.

It is an arithmetic number, because the mean of its divisors is an integer number (41264899104).

Almost surely, 2^423434134221 is an apocalyptic number.

It is an amenable number.

423434134221 is a deficient number, since it is larger than the sum of its proper divisors (236804251443).

423434134221 is a wasteful number, since it uses less digits than its factorization.

423434134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468919360.

The product of its digits is 55296, while the sum is 33.

Adding to 423434134221 its reverse (122431434324), we get a palindrome (545865568545).

The spelling of 423434134221 in words is "four hundred twenty-three billion, four hundred thirty-four million, one hundred thirty-four thousand, two hundred twenty-one".