142444342 has 4 divisors (see below), whose sum is σ = 213666516. Its totient is φ = 71222170.

The previous prime is 142444331. The next prime is 142444363. The reversal of 142444342 is 243444241.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142444342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35611084 + ... + 35611087.

It is an arithmetic number, because the mean of its divisors is an integer number (53416629).

Almost surely, 2^142444342 is an apocalyptic number.

142444342 is a deficient number, since it is larger than the sum of its proper divisors (71222174).

142444342 is an equidigital number, since it uses as much as digits as its factorization.

142444342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71222173.

The product of its digits is 12288, while the sum is 28.

The square root of 142444342 is about 11935.0049015491. The cubic root of 142444342 is about 522.2539512905.

Adding to 142444342 its reverse (243444241), we get a palindrome (385888583).

The spelling of 142444342 in words is "one hundred forty-two million, four hundred forty-four thousand, three hundred forty-two".