42030243644 has 12 divisors (see below), whose sum is σ = 73676965824. Its totient is φ = 20979681984.

The previous prime is 42030243643. The next prime is 42030243707. The reversal of 42030243644 is 44634203024.

It is a self number, because there is not a number n which added to its sum of digits gives 42030243644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42030243643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8857292 + ... + 8862035.

It is an arithmetic number, because the mean of its divisors is an integer number (6139747152).

Almost surely, 2^42030243644 is an apocalyptic number.

It is an amenable number.

42030243644 is a deficient number, since it is larger than the sum of its proper divisors (31646722180).

42030243644 is a wasteful number, since it uses less digits than its factorization.

42030243644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17719924 (or 17719922 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 42030243644 its reverse (44634203024), we get a palindrome (86664446668).

The spelling of 42030243644 in words is "forty-two billion, thirty million, two hundred forty-three thousand, six hundred forty-four".