134199920 has 20 divisors (see below), whose sum is σ = 312015000. Its totient is φ = 53679936.

The previous prime is 134199889. The next prime is 134199941. The reversal of 134199920 is 29991431.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838670 + ... + 838829.

It is an arithmetic number, because the mean of its divisors is an integer number (15600750).

Almost surely, 2^134199920 is an apocalyptic number.

134199920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134199920 is an abundant number, since it is smaller than the sum of its proper divisors (177815080).

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

134199920 is a wasteful number, since it uses less digits than its factorization.

134199920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677512 (or 1677506 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 134199920 is about 11584.4689131613. The cubic root of 134199920 is about 511.9773549555.

The spelling of 134199920 in words is "one hundred thirty-four million, one hundred ninety-nine thousand, nine hundred twenty".