142605269 has 2 divisors, whose sum is σ = 142605270. Its totient is φ = 142605268.

The previous prime is 142605263. The next prime is 142605319. The reversal of 142605269 is 962506241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115304644 + 27300625 = 10738^2 + 5225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142605269 is a prime.

It is a super-2 number, since 2×142605269² = 40672525493124722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142605263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71302634 + 71302635.

It is an arithmetic number, because the mean of its divisors is an integer number (71302635).

Almost surely, 2^142605269 is an apocalyptic number.

It is an amenable number.

142605269 is a deficient number, since it is larger than the sum of its proper divisors (1).

142605269 is an equidigital number, since it uses as much as digits as its factorization.

142605269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 142605269 is about 11941.7448055131. The cubic root of 142605269 is about 522.4505500236.

The spelling of 142605269 in words is "one hundred forty-two million, six hundred five thousand, two hundred sixty-nine".