423508540 has 96 divisors (see below), whose sum is σ = 1118121984. Its totient is φ = 131155200.

The previous prime is 423508507. The next prime is 423508559. The reversal of 423508540 is 45805324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83065 + ... + 88015.

It is an arithmetic number, because the mean of its divisors is an integer number (11647104).

Almost surely, 2^423508540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423508540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559060992).

423508540 is an abundant number, since it is smaller than the sum of its proper divisors (694613444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423508540 is a wasteful number, since it uses less digits than its factorization.

423508540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027 (or 5025 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 423508540 is about 20579.3231181203. The cubic root of 423508540 is about 750.9667769580.

The spelling of 423508540 in words is "four hundred twenty-three million, five hundred eight thousand, five hundred forty".