423542126513 has 6 divisors (see below), whose sum is σ = 465546304482. Its totient is φ = 385038296720.

The previous prime is 423542126479. The next prime is 423542126519. The reversal of 423542126513 is 315621245324.

It can be written as a sum of positive squares in only one way, i.e., 402941839729 + 20600286784 = 634777^2 + 143528^2 .

It is not a de Polignac number, because 423542126513 - 2³⁶ = 354822649777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423542126519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1750173956 + ... + 1750174197.

It is an arithmetic number, because the mean of its divisors is an integer number (77591050747).

Almost surely, 2^423542126513 is an apocalyptic number.

It is an amenable number.

423542126513 is a deficient number, since it is larger than the sum of its proper divisors (42004177969).

423542126513 is a wasteful number, since it uses less digits than its factorization.

423542126513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500348175 (or 3500348164 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

It can be divided in two parts, 423542 and 126513, that added together give a palindrome (550055).

The spelling of 423542126513 in words is "four hundred twenty-three billion, five hundred forty-two million, one hundred twenty-six thousand, five hundred thirteen".