423134405 has 24 divisors (see below), whose sum is σ = 534325752. Its totient is φ = 321439104.

The previous prime is 423134401. The next prime is 423134419. The reversal of 423134405 is 504431324.

It can be written as a sum of positive squares in 4 ways, for example, as 168636196 + 254498209 = 12986^2 + 15953^2 .

It is not a de Polignac number, because 423134405 - 2² = 423134401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423134401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 341447 + ... + 342683.

It is an arithmetic number, because the mean of its divisors is an integer number (22263573).

Almost surely, 2^423134405 is an apocalyptic number.

It is an amenable number.

423134405 is a deficient number, since it is larger than the sum of its proper divisors (111191347).

423134405 is a wasteful number, since it uses less digits than its factorization.

423134405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 423134405 is about 20570.2310390525. The cubic root of 423134405 is about 750.7455726570.

Adding to 423134405 its reverse (504431324), we get a palindrome (927565729).

The spelling of 423134405 in words is "four hundred twenty-three million, one hundred thirty-four thousand, four hundred five".