134142240 has 144 divisors (see below), whose sum is σ = 449330112. Its totient is φ = 33632256.

The previous prime is 134142227. The next prime is 134142247. The reversal of 134142240 is 42241431.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (134142247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138237 + ... + 139203.

It is an arithmetic number, because the mean of its divisors is an integer number (3120348).

Almost surely, 2^134142240 is an apocalyptic number.

134142240 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 134142240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224665056).

134142240 is an abundant number, since it is smaller than the sum of its proper divisors (315187872).

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

134142240 is a wasteful number, since it uses less digits than its factorization.

134142240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 994 counting only the distinct ones).

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

The square root of 134142240 is about 11581.9791054897. The cubic root of 134142240 is about 511.9039940432.

Adding to 134142240 its reverse (42241431), we get a palindrome (176383671).

The spelling of 134142240 in words is "one hundred thirty-four million, one hundred forty-two thousand, two hundred forty".