42240024 has 24 divisors (see below), whose sum is σ = 114400260. Its totient is φ = 14079984.

The previous prime is 42240017. The next prime is 42240031. The reversal of 42240024 is 42004224.

It is an interprime number because it is at equal distance from previous prime (42240017) and next prime (42240031).

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42239979 and 42240006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293262 + ... + 293405.

Almost surely, 2^42240024 is an apocalyptic number.

It is an amenable number.

42240024 is an abundant number, since it is smaller than the sum of its proper divisors (72160236).

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

42240024 is a wasteful number, since it uses less digits than its factorization.

42240024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586679 (or 586672 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 42240024 is about 6499.2325700809. The cubic root of 42240024 is about 348.2635736059.

Adding to 42240024 its reverse (42004224), we get a palindrome (84244248).

The spelling of 42240024 in words is "forty-two million, two hundred forty thousand, twenty-four".