134431240 has 96 divisors (see below), whose sum is σ = 333217800. Its totient is φ = 48742400.

The previous prime is 134431237. The next prime is 134431259. The reversal of 134431240 is 42134431.

It can be written as a sum of positive squares in 12 ways, for example, as 91738084 + 42693156 = 9578^2 + 6534^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335040 + ... + 335440.

Almost surely, 2^134431240 is an apocalyptic number.

134431240 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 134431240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166608900).

134431240 is an abundant number, since it is smaller than the sum of its proper divisors (198786560).

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

134431240 is a wasteful number, since it uses less digits than its factorization.

134431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 134431240 is about 11594.4486716704. The cubic root of 134431240 is about 512.2713507112.

Adding to 134431240 its reverse (42134431), we get a palindrome (176565671).

The spelling of 134431240 in words is "one hundred thirty-four million, four hundred thirty-one thousand, two hundred forty".