42042255240 has 64 divisors (see below), whose sum is σ = 127903224960. Its totient is φ = 11053360640.

The previous prime is 42042255221. The next prime is 42042255251. The reversal of 42042255240 is 4255224024.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 42042255198 and 42042255207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2458749 + ... + 2475788.

It is an arithmetic number, because the mean of its divisors is an integer number (1998487890).

Almost surely, 2^42042255240 is an apocalyptic number.

42042255240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42042255240 is an abundant number, since it is smaller than the sum of its proper divisors (85860969720).

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

42042255240 is a wasteful number, since it uses less digits than its factorization.

42042255240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934622 (or 4934618 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

Adding to 42042255240 its reverse (4255224024), we get a palindrome (46297479264).

The spelling of 42042255240 in words is "forty-two billion, forty-two million, two hundred fifty-five thousand, two hundred forty".