4142560721 has 16 divisors (see below), whose sum is σ = 4608791040. Its totient is φ = 3697608960.

The previous prime is 4142560717. The next prime is 4142560733. The reversal of 4142560721 is 1270652414.

It is a cyclic number.

It is not a de Polignac number, because 4142560721 - 2² = 4142560717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4142560781) 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, 622550 + ... + 629168.

It is an arithmetic number, because the mean of its divisors is an integer number (288049440).

Almost surely, 2^4142560721 is an apocalyptic number.

It is an amenable number.

4142560721 is a deficient number, since it is larger than the sum of its proper divisors (466230319).

4142560721 is a wasteful number, since it uses less digits than its factorization.

4142560721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8216.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 4142560721 is about 64362.7277311955. The cubic root of 4142560721 is about 1606.0397659593.

The spelling of 4142560721 in words is "four billion, one hundred forty-two million, five hundred sixty thousand, seven hundred twenty-one".