117387952542 has 112 divisors (see below), whose sum is σ = 309872215392. Its totient is φ = 32632839360.

The previous prime is 117387952519. The next prime is 117387952559. The reversal of 117387952542 is 245259783711.

117387952542 is a `hidden beast` number, since 1 + 1 + 7 + 3 + 8 + 7 + 95 + 2 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 55 ways as a sum of consecutive naturals, for example, 222192 + ... + 533052.

Almost surely, 2^117387952542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117387952542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154936107696).

117387952542 is an abundant number, since it is smaller than the sum of its proper divisors (192484262850).

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

117387952542 is an equidigital number, since it uses as much as digits as its factorization.

117387952542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310925 (or 310910 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The spelling of 117387952542 in words is "one hundred seventeen billion, three hundred eighty-seven million, nine hundred fifty-two thousand, five hundred forty-two".