42660040642 has 16 divisors (see below), whose sum is σ = 64153881792. Its totient is φ = 21275462800.

The previous prime is 42660040639. The next prime is 42660040673. The reversal of 42660040642 is 24604006624.

It is a junction number, because it is equal to n+sod(n) for n = 42660040598 and 42660040607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1901253 + ... + 1923559.

It is an arithmetic number, because the mean of its divisors is an integer number (4009617612).

Almost surely, 2^42660040642 is an apocalyptic number.

42660040642 is a deficient number, since it is larger than the sum of its proper divisors (21493841150).

42660040642 is a wasteful number, since it uses less digits than its factorization.

42660040642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24713.

The product of its (nonzero) digits is 55296, while the sum is 34.

The spelling of 42660040642 in words is "forty-two billion, six hundred sixty million, forty thousand, six hundred forty-two".