42723432 has 24 divisors (see below), whose sum is σ = 115709490. Its totient is φ = 14241120.

The previous prime is 42723413. The next prime is 42723433. The reversal of 42723432 is 23432724.

42723432 is a `hidden beast` number, since 427 + 234 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42693156 + 30276 = 6534^2 + 174^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 42723396 and 42723405.

It is not an unprimeable number, because it can be changed into a prime (42723433) 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, 296619 + ... + 296762.

Almost surely, 2^42723432 is an apocalyptic number.

It is an amenable number.

42723432 is an abundant number, since it is smaller than the sum of its proper divisors (72986058).

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

42723432 is a wasteful number, since it uses less digits than its factorization.

42723432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593393 (or 593386 counting only the distinct ones).

The product of its digits is 8064, while the sum is 27.

The square root of 42723432 is about 6536.3163938108. The cubic root of 42723432 is about 349.5870831157.

The spelling of 42723432 in words is "forty-two million, seven hundred twenty-three thousand, four hundred thirty-two".