117390520129 has 9 divisors (see below), whose sum is σ = 118922706147. Its totient is φ = 115877839584.

The previous prime is 117390520109. The next prime is 117390520139. The reversal of 117390520129 is 921025093711.

The square root of 117390520129 is 342623.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1349460225 + 116041059904 = 36735^2 + 340648^2 .

It is not a de Polignac number, because 117390520129 - 2¹³ = 117390511937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117390520091 and 117390520100.

It is not an unprimeable number, because it can be changed into a prime (117390520109) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 27065049 + ... + 27069385.

Almost surely, 2^117390520129 is an apocalyptic number.

117390520129 is the 342623-rd square number.

117390520129 is the 171312-nd centered octagonal number.

It is an amenable number.

117390520129 is a deficient number, since it is larger than the sum of its proper divisors (1532186018).

117390520129 is an frugal number, since it uses more digits than its factorization.

117390520129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8832 (or 4416 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 117390520129 in words is "one hundred seventeen billion, three hundred ninety million, five hundred twenty thousand, one hundred twenty-nine".