142769 has 4 divisors (see below), whose sum is σ = 155760. Its totient is φ = 129780.

The previous prime is 142759. The next prime is 142771. The reversal of 142769 is 967241.

142769 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 967241 = 11 ⋅87931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142769 is a prime.

It is a super-2 number, since 2×142769² = 40765974722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142759) 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, 6479 + ... + 6500.

It is an arithmetic number, because the mean of its divisors is an integer number (38940).

2¹⁴²⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

142769 is a deficient number, since it is larger than the sum of its proper divisors (12991).

142769 is a wasteful number, since it uses less digits than its factorization.

142769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990.

The product of its digits is 3024, while the sum is 29.

The square root of 142769 is about 377.8478529779. The cubic root of 142769 is about 52.2650422568.

The spelling of 142769 in words is "one hundred forty-two thousand, seven hundred sixty-nine".