136420 has 24 divisors (see below), whose sum is σ = 302400. Its totient is φ = 51552.

The previous prime is 136417. The next prime is 136421. The reversal of 136420 is 24631.

Added to its reverse (24631) it gives a 5-th power (161051 = 11⁵).

It is a super-2 number, since 2×136420² = 37220832800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136394 and 136403.

It is not an unprimeable number, because it can be changed into a prime (136421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201 + ... + 559.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2¹³⁶⁴²⁰ is an apocalyptic number.

136420 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 136420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151200).

136420 is an abundant number, since it is smaller than the sum of its proper divisors (165980).

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

136420 is a wasteful number, since it uses less digits than its factorization.

136420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 136420 is about 369.3507817780. The cubic root of 136420 is about 51.4785155617.

Adding to 136420 its reverse (24631), we get a 5-th power (161051 = 11⁵).

The spelling of 136420 in words is "one hundred thirty-six thousand, four hundred twenty".