42669 has 12 divisors (see below), whose sum is σ = 67392. Its totient is φ = 25800.

The previous prime is 42667. The next prime is 42677. The reversal of 42669 is 96624.

It is not a de Polignac number, because 42669 - 2¹ = 42667 is a prime.

It is a super-2 number, since 2×42669² = 3641287122, which contains 22 as substring.

It is a plaindrome in base 14.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42669.

It is not an unprimeable number, because it can be changed into a prime (42667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117 + ... + 314.

It is an arithmetic number, because the mean of its divisors is an integer number (5616).

2⁴²⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

42669 is a deficient number, since it is larger than the sum of its proper divisors (24723).

42669 is a wasteful number, since it uses less digits than its factorization.

42669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 445 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 42669 is about 206.5647598212. The cubic root of 42669 is about 34.9438555636.

The spelling of 42669 in words is "forty-two thousand, six hundred sixty-nine".