142569 has 24 divisors (see below), whose sum is σ = 246272. Its totient is φ = 77760.

The previous prime is 142567. The next prime is 142573. The reversal of 142569 is 965241.

142569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142569 - 2¹ = 142567 is a prime.

It is a super-2 number, since 2×142569² = 40651839522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 4⁶ + 5⁷ + 2 + 6⁴ + 9⁵ .

It is a Duffinian number.

It is a Curzon number.

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 142569.

It is not an unprimeable number, because it can be changed into a prime (142567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1917 + ... + 1989.

2¹⁴²⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

142569 is a deficient number, since it is larger than the sum of its proper divisors (103703).

142569 is a wasteful number, since it uses less digits than its factorization.

142569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 114 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 142569 is about 377.5831034355. The cubic root of 142569 is about 52.2406254405.

The spelling of 142569 in words is "one hundred forty-two thousand, five hundred sixty-nine".