142532569 has 2 divisors, whose sum is σ = 142532570. Its totient is φ = 142532568.

The previous prime is 142532567. The next prime is 142532581. The reversal of 142532569 is 965235241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103632400 + 38900169 = 10180^2 + 6237^2 .

It is an emirp because it is prime and its reverse (965235241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142532569 - 2¹ = 142532567 is a prime.

It is a super-2 number, since 2×142532569² = 40631066451479522, which contains 22 as substring.

Together with 142532567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (142532561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71266284 + 71266285.

It is an arithmetic number, because the mean of its divisors is an integer number (71266285).

Almost surely, 2^142532569 is an apocalyptic number.

It is an amenable number.

142532569 is a deficient number, since it is larger than the sum of its proper divisors (1).

142532569 is an equidigital number, since it uses as much as digits as its factorization.

142532569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 142532569 is about 11938.7004736697. The cubic root of 142532569 is about 522.3617533718.

The spelling of 142532569 in words is "one hundred forty-two million, five hundred thirty-two thousand, five hundred sixty-nine".