423123531142 has 16 divisors (see below), whose sum is σ = 683648929152. Its totient is φ = 195247301760.

The previous prime is 423123531133. The next prime is 423123531161. The reversal of 423123531142 is 241135321324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1558723 + ... + 1809934.

It is an arithmetic number, because the mean of its divisors is an integer number (42728058072).

Almost surely, 2^423123531142 is an apocalyptic number.

423123531142 is a deficient number, since it is larger than the sum of its proper divisors (260525398010).

423123531142 is a wasteful number, since it uses less digits than its factorization.

423123531142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373503.

The product of its digits is 17280, while the sum is 31.

Adding to 423123531142 its reverse (241135321324), we get a palindrome (664258852466).

The spelling of 423123531142 in words is "four hundred twenty-three billion, one hundred twenty-three million, five hundred thirty-one thousand, one hundred forty-two".