42660215121 has 16 divisors (see below), whose sum is σ = 57311480960. Its totient is φ = 28225342080.

The previous prime is 42660215041. The next prime is 42660215141. The reversal of 42660215121 is 12151206624.

It is not a de Polignac number, because 42660215121 - 2⁹ = 42660214609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42660215141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115836 + ... + 314226.

It is an arithmetic number, because the mean of its divisors is an integer number (3581967560).

Almost surely, 2^42660215121 is an apocalyptic number.

It is an amenable number.

42660215121 is a deficient number, since it is larger than the sum of its proper divisors (14651265839).

42660215121 is a wasteful number, since it uses less digits than its factorization.

42660215121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198936.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 42660215121 in words is "forty-two billion, six hundred sixty million, two hundred fifteen thousand, one hundred twenty-one".