142020231155105 has 16 divisors (see below), whose sum is σ = 170806302115200. Its totient is φ = 113361509065728.

The previous prime is 142020231155053. The next prime is 142020231155177. The reversal of 142020231155105 is 501551132020241.

It is a cyclic number.

It is not a de Polignac number, because 142020231155105 - 2³² = 142015936187809 is a prime.

It is a super-2 number, since 2×142020231155105² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169535414 + ... + 170371056.

It is an arithmetic number, because the mean of its divisors is an integer number (10675393882200).

Almost surely, 2^{142020231155105} is an apocalyptic number.

It is an amenable number.

142020231155105 is a deficient number, since it is larger than the sum of its proper divisors (28786070960095).

142020231155105 is an equidigital number, since it uses as much as digits as its factorization.

142020231155105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911800.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 142020231155105 its reverse (501551132020241), we get a palindrome (643571363175346).

The spelling of 142020231155105 in words is "one hundred forty-two trillion, twenty billion, two hundred thirty-one million, one hundred fifty-five thousand, one hundred five".