42006120556 has 24 divisors (see below), whose sum is σ = 78330653856. Its totient is φ = 19641672960.

The previous prime is 42006120553. The next prime is 42006120631. The reversal of 42006120556 is 65502160024.

It is not an unprimeable number, because it can be changed into a prime (42006120553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1956640 + ... + 1977991.

It is an arithmetic number, because the mean of its divisors is an integer number (3263777244).

Almost surely, 2^42006120556 is an apocalyptic number.

It is an amenable number.

42006120556 is a deficient number, since it is larger than the sum of its proper divisors (36324533300).

42006120556 is a wasteful number, since it uses less digits than its factorization.

42006120556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934809 (or 3934807 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 42006120556 in words is "forty-two billion, six million, one hundred twenty thousand, five hundred fifty-six".