142442503141521 has 16 divisors (see below), whose sum is σ = 207190054084608. Its totient is φ = 86328390363600.

The previous prime is 142442503141451. The next prime is 142442503141559. The reversal of 142442503141521 is 125141305244241.

It is a happy number.

It is not a de Polignac number, because 142442503141521 - 2⁹ = 142442503141009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142442503141521.

It is not an unprimeable number, because it can be changed into a prime (142442503141591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2664825 + ... + 17087606.

It is an arithmetic number, because the mean of its divisors is an integer number (12949378380288).

Almost surely, 2^{142442503141521} is an apocalyptic number.

142442503141521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142442503141521 is a deficient number, since it is larger than the sum of its proper divisors (64747550943087).

142442503141521 is a wasteful number, since it uses less digits than its factorization.

142442503141521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19970972.

The product of its (nonzero) digits is 153600, while the sum is 39.

Adding to 142442503141521 its reverse (125141305244241), we get a palindrome (267583808385762).

The spelling of 142442503141521 in words is "one hundred forty-two trillion, four hundred forty-two billion, five hundred three million, one hundred forty-one thousand, five hundred twenty-one".