117420 has 48 divisors (see below), whose sum is σ = 349440. Its totient is φ = 29376.

The previous prime is 117413. The next prime is 117427. The reversal of 117420 is 24711.

It is an interprime number because it is at equal distance from previous prime (117413) and next prime (117427).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 117420.

It is not an unprimeable number, because it can be changed into a prime (117427) by changing a digit.

117420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1089 + ... + 1191.

It is an arithmetic number, because the mean of its divisors is an integer number (7280).

2¹¹⁷⁴²⁰ is an apocalyptic number.

117420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174720).

117420 is an abundant number, since it is smaller than the sum of its proper divisors (232020).

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

117420 is a wasteful number, since it uses less digits than its factorization.

117420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 117420 is about 342.6660181576. Note that the first 3 decimals coincide. The cubic root of 117420 is about 48.9681870413.

The spelling of 117420 in words is "one hundred seventeen thousand, four hundred twenty", and thus it is an iban number.