134665920 has 336 divisors, whose sum is σ = 513527040. Its totient is φ = 32237568.

The previous prime is 134665889. The next prime is 134665957. The reversal of 134665920 is 29566431.

It is a happy number.

134665920 is a `hidden beast` number, since 1 + 3 + 4 + 66 + 592 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1258507 + ... + 1258613.

Almost surely, 2^134665920 is an apocalyptic number.

134665920 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 134665920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256763520).

134665920 is an abundant number, since it is smaller than the sum of its proper divisors (378861120).

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

134665920 is a wasteful number, since it uses less digits than its factorization.

134665920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 134665920 is about 11604.5646191488. The cubic root of 134665920 is about 512.5692724130.

The spelling of 134665920 in words is "one hundred thirty-four million, six hundred sixty-five thousand, nine hundred twenty".