42795661 has 4 divisors (see below), whose sum is σ = 42861852. Its totient is φ = 42729472.

The previous prime is 42795589. The next prime is 42795673. The reversal of 42795661 is 16659724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31573161 + 11222500 = 5619^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 42795661 - 2¹¹ = 42793613 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42795691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32116 + ... + 33421.

It is an arithmetic number, because the mean of its divisors is an integer number (10715463).

Almost surely, 2^42795661 is an apocalyptic number.

It is an amenable number.

42795661 is a deficient number, since it is larger than the sum of its proper divisors (66191).

42795661 is an equidigital number, since it uses as much as digits as its factorization.

42795661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66190.

The product of its digits is 90720, while the sum is 40.

The square root of 42795661 is about 6541.8392673620. The cubic root of 42795661 is about 349.7839782624.

The spelling of 42795661 in words is "forty-two million, seven hundred ninety-five thousand, six hundred sixty-one".