109420 has 12 divisors (see below), whose sum is σ = 229824. Its totient is φ = 43760.

The previous prime is 109397. The next prime is 109423. The reversal of 109420 is 24901.

109420 = T₁₂₉ + T₁₃₀ + ... + T₁₄₀.

109420 is nontrivially palindromic in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 109394 and 109403.

It is not an unprimeable number, because it can be changed into a prime (109423) by changing a digit.

109420 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 3 ways as a sum of consecutive naturals, for example, 2716 + ... + 2755.

It is an arithmetic number, because the mean of its divisors is an integer number (19152).

2¹⁰⁹⁴²⁰ is an apocalyptic number.

109420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109420 is an abundant number, since it is smaller than the sum of its proper divisors (120404).

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

109420 is a wasteful number, since it uses less digits than its factorization.

109420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480 (or 5478 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 109420 is about 330.7869404919. The cubic root of 109420 is about 47.8298372912.

It can be divided in two parts, 109 and 420, that added together give a square (529 = 23²).

The spelling of 109420 in words is "one hundred nine thousand, four hundred twenty".