120688617429 has 24 divisors (see below), whose sum is σ = 185821435800. Its totient is φ = 75217947648.

The previous prime is 120688617407. The next prime is 120688617431. The reversal of 120688617429 is 924716886021.

It is a happy number.

120688617429 is a `hidden beast` number, since 1 + 206 + 8 + 8 + 6 + 1 + 7 + 429 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 480793329 + 120207824100 = 21927^2 + 346710^2 .

It is not a de Polignac number, because 120688617429 - 2⁸ = 120688617173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120688617529) 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 in 23 ways as a sum of consecutive naturals, for example, 2624232 + ... + 2669825.

It is an arithmetic number, because the mean of its divisors is an integer number (7742559825).

Almost surely, 2^120688617429 is an apocalyptic number.

It is an amenable number.

120688617429 is a deficient number, since it is larger than the sum of its proper divisors (65132818371).

120688617429 is a wasteful number, since it uses less digits than its factorization.

120688617429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5294229 (or 5294226 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 120688617429 in words is "one hundred twenty billion, six hundred eighty-eight million, six hundred seventeen thousand, four hundred twenty-nine".