42440400024 has 32 divisors (see below), whose sum is σ = 115746546240. Its totient is φ = 12860727200.

The previous prime is 42440400019. The next prime is 42440400029. The reversal of 42440400024 is 42000404424.

It is an interprime number because it is at equal distance from previous prime (42440400019) and next prime (42440400029).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 42440399967 and 42440400003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440400029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80379282 + ... + 80379809.

It is an arithmetic number, because the mean of its divisors is an integer number (3617079570).

Almost surely, 2^42440400024 is an apocalyptic number.

42440400024 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42440400024 is an abundant number, since it is smaller than the sum of its proper divisors (73306146216).

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

42440400024 is a wasteful number, since it uses less digits than its factorization.

42440400024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160759111 (or 160759107 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 42440400024 its reverse (42000404424), we get a palindrome (84440804448).

The spelling of 42440400024 in words is "forty-two billion, four hundred forty million, four hundred thousand, twenty-four".