142523369 has 2 divisors, whose sum is σ = 142523370. Its totient is φ = 142523368.

The previous prime is 142523363. The next prime is 142523377. The reversal of 142523369 is 963325241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124992400 + 17530969 = 11180^2 + 4187^2 .

It is an emirp because it is prime and its reverse (963325241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142523369 is a prime.

It is a super-2 number, since 2×142523369² = 40625821422220322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142523363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71261684 + 71261685.

It is an arithmetic number, because the mean of its divisors is an integer number (71261685).

Almost surely, 2^142523369 is an apocalyptic number.

It is an amenable number.

142523369 is a deficient number, since it is larger than the sum of its proper divisors (1).

142523369 is an equidigital number, since it uses as much as digits as its factorization.

142523369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 142523369 is about 11938.3151658850. The cubic root of 142523369 is about 522.3505142294.

The spelling of 142523369 in words is "one hundred forty-two million, five hundred twenty-three thousand, three hundred sixty-nine".