42240343424 has 32 divisors (see below), whose sum is σ = 86107688040. Its totient is φ = 20629002240.

The previous prime is 42240343421. The next prime is 42240343427. The reversal of 42240343424 is 42434304224.

42240343424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42240343421) and next prime (42240343427).

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×42240343424² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240343421) 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, 3831737 + ... + 3842744.

Almost surely, 2^42240343424 is an apocalyptic number.

It is an amenable number.

42240343424 is an abundant number, since it is smaller than the sum of its proper divisors (43867344616).

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

42240343424 is an equidigital number, since it uses as much as digits as its factorization.

42240343424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674538 (or 7674526 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 42240343424 its reverse (42434304224), we get a palindrome (84674647648).

The spelling of 42240343424 in words is "forty-two billion, two hundred forty million, three hundred forty-three thousand, four hundred twenty-four".