142020335143442 has 16 divisors (see below), whose sum is σ = 243463613827392. Its totient is φ = 60865812380400.

The previous prime is 142020335143403. The next prime is 142020335143447. The reversal of 142020335143442 is 244341533020241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 142020335143396 and 142020335143405.

It is not an unprimeable number, because it can be changed into a prime (142020335143447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21314813 + ... + 27172815.

It is an arithmetic number, because the mean of its divisors is an integer number (15216475864212).

Almost surely, 2^{142020335143442} is an apocalyptic number.

142020335143442 is a deficient number, since it is larger than the sum of its proper divisors (101443278683950).

142020335143442 is a wasteful number, since it uses less digits than its factorization.

142020335143442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7589713.

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 142020335143442 its reverse (244341533020241), we get a palindrome (386361868163683).

The spelling of 142020335143442 in words is "one hundred forty-two trillion, twenty billion, three hundred thirty-five million, one hundred forty-three thousand, four hundred forty-two".