134140440 has 128 divisors (see below), whose sum is σ = 469440000. Its totient is φ = 30651264.

The previous prime is 134140417. The next prime is 134140451. The reversal of 134140440 is 44041431.

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

It is a congruent number.

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, 39531 + ... + 42789.

It is an arithmetic number, because the mean of its divisors is an integer number (3667500).

Almost surely, 2^134140440 is an apocalyptic number.

134140440 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 134140440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234720000).

134140440 is an abundant number, since it is smaller than the sum of its proper divisors (335299560).

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

134140440 is a wasteful number, since it uses less digits than its factorization.

134140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294 (or 3276 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 134140440 is about 11581.9013983024. The cubic root of 134140440 is about 511.9017043560.

Adding to 134140440 its reverse (44041431), we get a palindrome (178181871).

Subtracting from 134140440 its reverse (44041431), we obtain a palindrome (90099009).

The spelling of 134140440 in words is "one hundred thirty-four million, one hundred forty thousand, four hundred forty".