42192665 has 4 divisors (see below), whose sum is σ = 50631204. Its totient is φ = 33754128.

The previous prime is 42192653. The next prime is 42192677. The reversal of 42192665 is 56629124.

It is a happy number.

42192665 is nontrivially palindromic in base 13.

42192665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (42192653) and next prime (42192677).

It can be written as a sum of positive squares in 2 ways, for example, as 7946761 + 34245904 = 2819^2 + 5852^2 .

It is a cyclic number.

It is not a de Polignac number, because 42192665 - 2¹⁰ = 42191641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4219262 + ... + 4219271.

It is an arithmetic number, because the mean of its divisors is an integer number (12657801).

Almost surely, 2^42192665 is an apocalyptic number.

It is an amenable number.

42192665 is a deficient number, since it is larger than the sum of its proper divisors (8438539).

42192665 is an equidigital number, since it uses as much as digits as its factorization.

42192665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8438538.

The product of its digits is 25920, while the sum is 35.

The square root of 42192665 is about 6495.5881180999. The cubic root of 42192665 is about 348.1333686413.

The spelling of 42192665 in words is "forty-two million, one hundred ninety-two thousand, six hundred sixty-five".