423571405 has 12 divisors (see below), whose sum is σ = 539945460. Its totient is φ = 318923264.

The previous prime is 423571403. The next prime is 423571411. The reversal of 423571405 is 504175324.

It can be written as a sum of positive squares in 6 ways, for example, as 51351556 + 372219849 = 7166^2 + 19293^2 .

It is not a de Polignac number, because 423571405 - 2¹ = 423571403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423571403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145120 + ... + 148009.

It is an arithmetic number, because the mean of its divisors is an integer number (44995455).

Almost surely, 2^423571405 is an apocalyptic number.

It is an amenable number.

423571405 is a deficient number, since it is larger than the sum of its proper divisors (116374055).

423571405 is a wasteful number, since it uses less digits than its factorization.

423571405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293168 (or 293151 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 423571405 is about 20580.8504440414. The cubic root of 423571405 is about 751.0039325965.

The spelling of 423571405 in words is "four hundred twenty-three million, five hundred seventy-one thousand, four hundred five".