42144420634 has 16 divisors (see below), whose sum is σ = 63343133280. Its totient is φ = 21030070320.

The previous prime is 42144420629. The next prime is 42144420709. The reversal of 42144420634 is 43602444124.

It is a self number, because there is not a number n which added to its sum of digits gives 42144420634.

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 7 ways as a sum of consecutive naturals, for example, 4416132 + ... + 4425664.

It is an arithmetic number, because the mean of its divisors is an integer number (3958945830).

Almost surely, 2^42144420634 is an apocalyptic number.

42144420634 is a deficient number, since it is larger than the sum of its proper divisors (21198712646).

42144420634 is a wasteful number, since it uses less digits than its factorization.

42144420634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13725.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 42144420634 its reverse (43602444124), we get a palindrome (85746864758).

The spelling of 42144420634 in words is "forty-two billion, one hundred forty-four million, four hundred twenty thousand, six hundred thirty-four".