142542329 has 2 divisors, whose sum is σ = 142542330. Its totient is φ = 142542328.

The previous prime is 142542319. The next prime is 142542347. The reversal of 142542329 is 923245241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142157929 + 384400 = 11923^2 + 620^2 .

It is an emirp because it is prime and its reverse (923245241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142542329 - 2¹² = 142538233 is a prime.

It is a super-4 number, since 4×142542329⁴ (a number of 34 digits) contains 4444 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142542295 and 142542304.

It is not a weakly prime, because it can be changed into another prime (142542319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71271164 + 71271165.

It is an arithmetic number, because the mean of its divisors is an integer number (71271165).

Almost surely, 2^142542329 is an apocalyptic number.

It is an amenable number.

142542329 is a deficient number, since it is larger than the sum of its proper divisors (1).

142542329 is an equidigital number, since it uses as much as digits as its factorization.

142542329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 142542329 is about 11939.1092213783. The cubic root of 142542329 is about 522.3736761073.

The spelling of 142542329 in words is "one hundred forty-two million, five hundred forty-two thousand, three hundred twenty-nine".