142444442 has 16 divisors (see below), whose sum is σ = 252068352. Its totient is φ = 59078160.

The previous prime is 142444439. The next prime is 142444457. The reversal of 142444442 is 244444241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163673 + ... + 164540.

It is an arithmetic number, because the mean of its divisors is an integer number (15754272).

Almost surely, 2^142444442 is an apocalyptic number.

142444442 is a deficient number, since it is larger than the sum of its proper divisors (109623910).

142444442 is a wasteful number, since it uses less digits than its factorization.

142444442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328253.

The product of its digits is 16384, while the sum is 29.

The square root of 142444442 is about 11935.0090909056. The cubic root of 142444442 is about 522.2540735029.

Adding to 142444442 its reverse (244444241), we get a palindrome (386888683).

The spelling of 142444442 in words is "one hundred forty-two million, four hundred forty-four thousand, four hundred forty-two".