142442073 has 6 divisors (see below), whose sum is σ = 205749674. Its totient is φ = 94961376.

The previous prime is 142442071. The next prime is 142442089. The reversal of 142442073 is 370244241.

It can be written as a sum of positive squares in only one way, i.e., 104101209 + 38340864 = 10203^2 + 6192^2 .

It is not a de Polignac number, because 142442073 - 2¹ = 142442071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142442071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7913440 + ... + 7913457.

Almost surely, 2^142442073 is an apocalyptic number.

It is an amenable number.

142442073 is a deficient number, since it is larger than the sum of its proper divisors (63307601).

142442073 is a wasteful number, since it uses less digits than its factorization.

142442073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15826903 (or 15826900 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 142442073 is about 11934.9098446532. The cubic root of 142442073 is about 522.2511782764.

The spelling of 142442073 in words is "one hundred forty-two million, four hundred forty-two thousand, seventy-three".