42669165 has 32 divisors (see below), whose sum is σ = 85118976. Its totient is φ = 17732160.

The previous prime is 42669161. The next prime is 42669191. The reversal of 42669165 is 56196624.

42669165 = T₂₆₅ + T₂₆₆ + ... + T₆₄₉.

It is not a de Polignac number, because 42669165 - 2² = 42669161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42669161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17317 + ... + 19626.

It is an arithmetic number, because the mean of its divisors is an integer number (2659968).

Almost surely, 2^42669165 is an apocalyptic number.

It is an amenable number.

42669165 is a deficient number, since it is larger than the sum of its proper divisors (42449811).

42669165 is a wasteful number, since it uses less digits than its factorization.

42669165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36969.

The product of its digits is 77760, while the sum is 39.

The square root of 42669165 is about 6532.1638834310. The cubic root of 42669165 is about 349.4390060589.

It can be divided in two parts, 4266 and 9165, that added together give a palindrome (13431).

The spelling of 42669165 in words is "forty-two million, six hundred sixty-nine thousand, one hundred sixty-five".