134121540 has 96 divisors (see below), whose sum is σ = 431633664. Its totient is φ = 30481920.

The previous prime is 134121529. The next prime is 134121563. The reversal of 134121540 is 45121431.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81930 + ... + 83550.

It is an arithmetic number, because the mean of its divisors is an integer number (4496184).

Almost surely, 2^134121540 is an apocalyptic number.

134121540 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 134121540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215816832).

134121540 is an abundant number, since it is smaller than the sum of its proper divisors (297512124).

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

134121540 is a wasteful number, since it uses less digits than its factorization.

134121540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1835 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 134121540 is about 11581.0854413565. The cubic root of 134121540 is about 511.8776614036.

Adding to 134121540 its reverse (45121431), we get a palindrome (179242971).

The spelling of 134121540 in words is "one hundred thirty-four million, one hundred twenty-one thousand, five hundred forty".