134123520 has 208 divisors, whose sum is σ = 448211520. Its totient is φ = 34209792.

The previous prime is 134123513. The next prime is 134123531. The reversal of 134123520 is 25321431.

It is a nialpdrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2273251 + ... + 2273309.

Almost surely, 2^134123520 is an apocalyptic number.

134123520 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 134123520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224105760).

134123520 is an abundant number, since it is smaller than the sum of its proper divisors (314088000).

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

134123520 is an equidigital number, since it uses as much as digits as its factorization.

134123520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 134123520 is about 11581.1709252562. The cubic root of 134123520 is about 511.8801802950.

Adding to 134123520 its reverse (25321431), we get a palindrome (159444951).

The spelling of 134123520 in words is "one hundred thirty-four million, one hundred twenty-three thousand, five hundred twenty".