42551240240 has 80 divisors (see below), whose sum is σ = 106953258720. Its totient is φ = 15688857600.

The previous prime is 42551240219. The next prime is 42551240257. The reversal of 42551240240 is 4204215524.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322061 + ... + 434540.

It is an arithmetic number, because the mean of its divisors is an integer number (1336915734).

Almost surely, 2^42551240240 is an apocalyptic number.

42551240240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42551240240 is an abundant number, since it is smaller than the sum of its proper divisors (64402018480).

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

42551240240 is a wasteful number, since it uses less digits than its factorization.

42551240240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756670 (or 756664 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 42551240240 its reverse (4204215524), we get a palindrome (46755455764).

The spelling of 42551240240 in words is "forty-two billion, five hundred fifty-one million, two hundred forty thousand, two hundred forty".