142440442 has 8 divisors (see below), whose sum is σ = 214266996. Its totient is φ = 71018112.

The previous prime is 142440427. The next prime is 142440481. The reversal of 142440442 is 244044241.

142440442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 119486761 + 22953681 = 10931^2 + 4791^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100173 + ... + 101584.

Almost surely, 2^142440442 is an apocalyptic number.

142440442 is a deficient number, since it is larger than the sum of its proper divisors (71826554).

142440442 is a wasteful number, since it uses less digits than its factorization.

142440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202112.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 142440442 is about 11934.8415154957. The cubic root of 142440442 is about 522.2491849634.

Adding to 142440442 its reverse (244044241), we get a palindrome (386484683).

The spelling of 142440442 in words is "one hundred forty-two million, four hundred forty thousand, four hundred forty-two".