42240436 has 12 divisors (see below), whose sum is σ = 84480928. Its totient is φ = 18103032.

The previous prime is 42240433. The next prime is 42240463. The reversal of 42240436 is 63404224.

42240436 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42240436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754266 + ... + 754321.

Almost surely, 2^42240436 is an apocalyptic number.

It is an amenable number.

42240436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42240436 is a wasteful number, since it uses less digits than its factorization.

42240436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508598 (or 1508596 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 42240436 is about 6499.2642660535. The cubic root of 42240436 is about 348.2647058979.

The spelling of 42240436 in words is "forty-two million, two hundred forty thousand, four hundred thirty-six".