42543353640 has 64 divisors (see below), whose sum is σ = 127795449600. Its totient is φ = 11330193152.

The previous prime is 42543353627. The next prime is 42543353641. The reversal of 42543353640 is 4635334524.

It is not an unprimeable number, because it can be changed into a prime (42543353641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136560 + ... + 322079.

It is an arithmetic number, because the mean of its divisors is an integer number (1996803900).

Almost surely, 2^42543353640 is an apocalyptic number.

42543353640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42543353640 is an abundant number, since it is smaller than the sum of its proper divisors (85252095960).

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

42543353640 is a wasteful number, since it uses less digits than its factorization.

42543353640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459426 (or 459422 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 39.

The spelling of 42543353640 in words is "forty-two billion, five hundred forty-three million, three hundred fifty-three thousand, six hundred forty".