129042143056 has 40 divisors (see below), whose sum is σ = 265059574784. Its totient is φ = 60752177280.

The previous prime is 129042143047. The next prime is 129042143119. The reversal of 129042143056 is 650341240921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3497400 + ... + 3534103.

Almost surely, 2^129042143056 is an apocalyptic number.

129042143056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129042143056 is an abundant number, since it is smaller than the sum of its proper divisors (136017431728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129042143056 is a wasteful number, since it uses less digits than its factorization.

129042143056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031579 (or 7031573 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 129042143056 its reverse (650341240921), we get a palindrome (779383383977).

The spelling of 129042143056 in words is "one hundred twenty-nine billion, forty-two million, one hundred forty-three thousand, fifty-six".