4042513661 has 8 divisors (see below), whose sum is σ = 4114272000. Its totient is φ = 3971270160.

The previous prime is 4042513633. The next prime is 4042513669. The reversal of 4042513661 is 1663152404.

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

It is a cyclic number.

It is not a de Polignac number, because 4042513661 - 2⁶ = 4042513597 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 (4042513669) 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, 112850 + ... + 144291.

It is an arithmetic number, because the mean of its divisors is an integer number (514284000).

Almost surely, 2^4042513661 is an apocalyptic number.

It is an amenable number.

4042513661 is a deficient number, since it is larger than the sum of its proper divisors (71758339).

4042513661 is a wasteful number, since it uses less digits than its factorization.

4042513661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257419.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 4042513661 is about 63580.7648664280. The cubic root of 4042513661 is about 1593.0050970900.

The spelling of 4042513661 in words is "four billion, forty-two million, five hundred thirteen thousand, six hundred sixty-one".