42404440240 has 40 divisors (see below), whose sum is σ = 100994973408. Its totient is φ = 16548072960.

The previous prime is 42404440237. The next prime is 42404440241. The reversal of 42404440240 is 4204440424.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 42404440199 and 42404440208.

It is not an unprimeable number, because it can be changed into a prime (42404440241) 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, 6460812 + ... + 6467371.

Almost surely, 2^42404440240 is an apocalyptic number.

42404440240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42404440240 is an abundant number, since it is smaller than the sum of its proper divisors (58590533168).

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

42404440240 is a wasteful number, since it uses less digits than its factorization.

42404440240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928237 (or 12928231 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 42404440240 its reverse (4204440424), we get a palindrome (46608880664).

The spelling of 42404440240 in words is "forty-two billion, four hundred four million, four hundred forty thousand, two hundred forty".