134240240 has 40 divisors (see below), whose sum is σ = 315344400. Its totient is φ = 53139456.

The previous prime is 134240231. The next prime is 134240269. The reversal of 134240240 is 42042431.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890 + ... + 16409.

It is an arithmetic number, because the mean of its divisors is an integer number (7883610).

Almost surely, 2^134240240 is an apocalyptic number.

134240240 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 134240240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157672200).

134240240 is an abundant number, since it is smaller than the sum of its proper divisors (181104160).

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

134240240 is a wasteful number, since it uses less digits than its factorization.

134240240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17409 (or 17403 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 134240240 is about 11586.2090435138. The cubic root of 134240240 is about 512.0286238880.

Adding to 134240240 its reverse (42042431), we get a palindrome (176282671).

The spelling of 134240240 in words is "one hundred thirty-four million, two hundred forty thousand, two hundred forty".