42420444440 has 32 divisors (see below), whose sum is σ = 104122910160. Its totient is φ = 15425616000.

The previous prime is 42420444431. The next prime is 42420444461. The reversal of 42420444440 is 4444402424.

It is a junction number, because it is equal to n+sod(n) for n = 42420444397 and 42420444406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48204611 + ... + 48205490.

Almost surely, 2^42420444440 is an apocalyptic number.

42420444440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42420444440 is an abundant number, since it is smaller than the sum of its proper divisors (61702465720).

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

42420444440 is a wasteful number, since it uses less digits than its factorization.

42420444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96410123 (or 96410119 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 42420444440 its reverse (4444402424), we get a palindrome (46864846864).

The spelling of 42420444440 in words is "forty-two billion, four hundred twenty million, four hundred forty-four thousand, four hundred forty".