42144420628 has 12 divisors (see below), whose sum is σ = 73875457012. Its totient is φ = 21037147200.

The previous prime is 42144420589. The next prime is 42144420629. The reversal of 42144420628 is 82602444124.

It can be written as a sum of positive squares in 2 ways, for example, as 20414122884 + 21730297744 = 142878^2 + 147412^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42144420629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8763075 + ... + 8767882.

Almost surely, 2^42144420628 is an apocalyptic number.

It is an amenable number.

42144420628 is a deficient number, since it is larger than the sum of its proper divisors (31731036384).

42144420628 is a wasteful number, since it uses less digits than its factorization.

42144420628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17531562 (or 17531560 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 37.

The spelling of 42144420628 in words is "forty-two billion, one hundred forty-four million, four hundred twenty thousand, six hundred twenty-eight".