135400140 has 48 divisors (see below), whose sum is σ = 421246560. Its totient is φ = 36106560.

The previous prime is 135400129. The next prime is 135400147. The reversal of 135400140 is 41004531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (135400147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124831 + ... + 125910.

It is an arithmetic number, because the mean of its divisors is an integer number (8775970).

Almost surely, 2^135400140 is an apocalyptic number.

135400140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135400140 is an abundant number, since it is smaller than the sum of its proper divisors (285846420).

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

135400140 is a wasteful number, since it uses less digits than its factorization.

135400140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250759 (or 250751 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 135400140 is about 11636.1565819647. The cubic root of 135400140 is about 513.4991209417.

Adding to 135400140 its reverse (41004531), we get a palindrome (176404671).

The spelling of 135400140 in words is "one hundred thirty-five million, four hundred thousand, one hundred forty".