142440340120442 has 16 divisors (see below), whose sum is σ = 262966781761152. Its totient is φ = 56350024662960.

The previous prime is 142440340120423. The next prime is 142440340120531. The reversal of 142440340120442 is 244021043044241.

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, 391319615534 + ... + 391319615897.

It is an arithmetic number, because the mean of its divisors is an integer number (16435423860072).

Almost surely, 2^{142440340120442} is an apocalyptic number.

142440340120442 is a deficient number, since it is larger than the sum of its proper divisors (120526441640710).

142440340120442 is a wasteful number, since it uses less digits than its factorization.

142440340120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782639231453.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 142440340120442 its reverse (244021043044241), we get a palindrome (386461383164683).

The spelling of 142440340120442 in words is "one hundred forty-two trillion, four hundred forty billion, three hundred forty million, one hundred twenty thousand, four hundred forty-two".