142253329 has 3 divisors (see below), whose sum is σ = 142265257. Its totient is φ = 142241402.

The previous prime is 142253317. The next prime is 142253333. The reversal of 142253329 is 923352241.

The square root of 142253329 is 11927.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 923352241 = 7 ⋅131907463.

It is not a de Polignac number, because 142253329 - 2⁷ = 142253201 is a prime.

It is a super-2 number, since 2×142253329² = 40472019223164482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142253329.

It is not an unprimeable number, because it can be changed into a prime (142253369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5964 + ... + 17890.

Almost surely, 2^142253329 is an apocalyptic number.

142253329 is the 11927-th square number.

142253329 is the 5964-th centered octagonal number.

It is an amenable number.

142253329 is a deficient number, since it is larger than the sum of its proper divisors (11928).

142253329 is an frugal number, since it uses more digits than its factorization.

142253329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23854 (or 11927 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The cubic root of 142253329 is about 522.0204052935.

The spelling of 142253329 in words is "one hundred forty-two million, two hundred fifty-three thousand, three hundred twenty-nine".