134720520 has 64 divisors (see below), whose sum is σ = 440907840. Its totient is φ = 32659200.

The previous prime is 134720489. The next prime is 134720527. The reversal of 134720520 is 25027431.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (134720527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49711 + ... + 52350.

It is an arithmetic number, because the mean of its divisors is an integer number (6889185).

Almost surely, 2^134720520 is an apocalyptic number.

134720520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134720520 is an abundant number, since it is smaller than the sum of its proper divisors (306187320).

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

134720520 is a wasteful number, since it uses less digits than its factorization.

134720520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102086 (or 102082 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 134720520 is about 11606.9169032952. The cubic root of 134720520 is about 512.6385364129.

Adding to 134720520 its reverse (25027431), we get a palindrome (159747951).

The spelling of 134720520 in words is "one hundred thirty-four million, seven hundred twenty thousand, five hundred twenty".