142969 has 2 divisors, whose sum is σ = 142970. Its totient is φ = 142968.

The previous prime is 142963. The next prime is 142973. The reversal of 142969 is 969241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82944 + 60025 = 288^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 142969 - 2⁷ = 142841 is a prime.

It is a super-2 number, since 2×142969² = 40880269922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142969.

It is not a weakly prime, because it can be changed into another prime (142963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71484 + 71485.

It is an arithmetic number, because the mean of its divisors is an integer number (71485).

2¹⁴²⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

142969 is a deficient number, since it is larger than the sum of its proper divisors (1).

142969 is an equidigital number, since it uses as much as digits as its factorization.

142969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 142969 is about 378.1124171460. The cubic root of 142969 is about 52.2894362807.

It can be divided in two parts, 142 and 969, that added together give a palindrome (1111).

The spelling of 142969 in words is "one hundred forty-two thousand, nine hundred sixty-nine".