142351115221 has 64 divisors (see below), whose sum is σ = 185281413120. Its totient is φ = 106442864640.

The previous prime is 142351115219. The next prime is 142351115239. The reversal of 142351115221 is 122511153241.

It is not a de Polignac number, because 142351115221 - 2¹ = 142351115219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142351115221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142351115201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20958336 + ... + 20965126.

It is an arithmetic number, because the mean of its divisors is an integer number (2895022080).

Almost surely, 2^142351115221 is an apocalyptic number.

It is an amenable number.

142351115221 is a deficient number, since it is larger than the sum of its proper divisors (42930297899).

142351115221 is a wasteful number, since it uses less digits than its factorization.

142351115221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034.

The product of its digits is 2400, while the sum is 28.

Adding to 142351115221 its reverse (122511153241), we get a palindrome (264862268462).

The spelling of 142351115221 in words is "one hundred forty-two billion, three hundred fifty-one million, one hundred fifteen thousand, two hundred twenty-one".