142981121726 has 4 divisors (see below), whose sum is σ = 214471682592. Its totient is φ = 71490560862.

The previous prime is 142981121713. The next prime is 142981121729. The reversal of 142981121726 is 627121189241.

It is a happy number.

142981121726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 627121189241 = 59 ⋅10629172699.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142981121729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35745280430 + ... + 35745280433.

It is an arithmetic number, because the mean of its divisors is an integer number (53617920648).

Almost surely, 2^142981121726 is an apocalyptic number.

142981121726 is a deficient number, since it is larger than the sum of its proper divisors (71490560866).

142981121726 is an equidigital number, since it uses as much as digits as its factorization.

142981121726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71490560865.

The product of its digits is 96768, while the sum is 44.

The spelling of 142981121726 in words is "one hundred forty-two billion, nine hundred eighty-one million, one hundred twenty-one thousand, seven hundred twenty-six".