142578433 has 2 divisors, whose sum is σ = 142578434. Its totient is φ = 142578432.

The previous prime is 142578409. The next prime is 142578481. The reversal of 142578433 is 334875241.

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., 132987024 + 9591409 = 11532^2 + 3097^2 .

It is an emirp because it is prime and its reverse (334875241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142578433 - 2⁹ = 142577921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142578392 and 142578401.

It is not a weakly prime, because it can be changed into another prime (142878433) 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 as a sum of consecutive naturals, namely, 71289216 + 71289217.

It is an arithmetic number, because the mean of its divisors is an integer number (71289217).

Almost surely, 2^142578433 is an apocalyptic number.

It is an amenable number.

142578433 is a deficient number, since it is larger than the sum of its proper divisors (1).

142578433 is an equidigital number, since it uses as much as digits as its factorization.

142578433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 37.

The square root of 142578433 is about 11940.6211312477. The cubic root of 142578433 is about 522.4177757261.

The spelling of 142578433 in words is "one hundred forty-two million, five hundred seventy-eight thousand, four hundred thirty-three".