42516661 has 8 divisors (see below), whose sum is σ = 48823200. Its totient is φ = 36617040.

The previous prime is 42516641. The next prime is 42516671. The reversal of 42516661 is 16661524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42516661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42516611) 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, 101506 + ... + 101923.

It is an arithmetic number, because the mean of its divisors is an integer number (6102900).

Almost surely, 2^42516661 is an apocalyptic number.

It is an amenable number.

42516661 is a deficient number, since it is larger than the sum of its proper divisors (6306539).

42516661 is a wasteful number, since it uses less digits than its factorization.

42516661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203459.

The product of its digits is 8640, while the sum is 31.

The square root of 42516661 is about 6520.4801203592. The cubic root of 42516661 is about 349.0221987341.

The spelling of 42516661 in words is "forty-two million, five hundred sixteen thousand, six hundred sixty-one".