128313679142 has 32 divisors (see below), whose sum is σ = 214031911680. Its totient is φ = 57196545120.

The previous prime is 128313679129. The next prime is 128313679159. The reversal of 128313679142 is 241976313821.

It is a super-2 number, since 2×128313679142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2515463 + ... + 2565965.

It is an arithmetic number, because the mean of its divisors is an integer number (6688497240).

Almost surely, 2^128313679142 is an apocalyptic number.

128313679142 is a deficient number, since it is larger than the sum of its proper divisors (85718232538).

128313679142 is a wasteful number, since it uses less digits than its factorization.

128313679142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52748.

The product of its digits is 435456, while the sum is 47.

It can be divided in two parts, 128313679 and 142, that added together give a palindrome (128313821).

The spelling of 128313679142 in words is "one hundred twenty-eight billion, three hundred thirteen million, six hundred seventy-nine thousand, one hundred forty-two".