134386420 has 72 divisors (see below), whose sum is σ = 330228360. Its totient is φ = 45803520.

The previous prime is 134386409. The next prime is 134386433. The reversal of 134386420 is 24683431.

It can be written as a sum of positive squares in 4 ways, for example, as 9572836 + 124813584 = 3094^2 + 11172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235896 + ... + 236464.

It is an arithmetic number, because the mean of its divisors is an integer number (4586505).

Almost surely, 2^134386420 is an apocalyptic number.

134386420 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 134386420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165114180).

134386420 is an abundant number, since it is smaller than the sum of its proper divisors (195841940).

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

134386420 is a wasteful number, since it uses less digits than its factorization.

134386420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 134386420 is about 11592.5156890125. The cubic root of 134386420 is about 512.2144131668.

The spelling of 134386420 in words is "one hundred thirty-four million, three hundred eighty-six thousand, four hundred twenty".