142001446 has 8 divisors (see below), whose sum is σ = 213565320. Its totient is φ = 70813008.

The previous prime is 142001443. The next prime is 142001479. The reversal of 142001446 is 644100241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142001441) 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 3 ways as a sum of consecutive naturals, for example, 92911 + ... + 94426.

It is an arithmetic number, because the mean of its divisors is an integer number (26695665).

Almost surely, 2^142001446 is an apocalyptic number.

142001446 is a deficient number, since it is larger than the sum of its proper divisors (71563874).

142001446 is a wasteful number, since it uses less digits than its factorization.

142001446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187718.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 142001446 is about 11916.4359604707. The cubic root of 142001446 is about 521.7121154976.

Adding to 142001446 its reverse (644100241), we get a palindrome (786101687).

The spelling of 142001446 in words is "one hundred forty-two million, one thousand, four hundred forty-six".