135557740 has 24 divisors (see below), whose sum is σ = 285545232. Its totient is φ = 54056640.

The previous prime is 135557731. The next prime is 135557743. The reversal of 135557740 is 47755531.

It is a self number, because there is not a number n which added to its sum of digits gives 135557740.

It is not an unprimeable number, because it can be changed into a prime (135557743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3619 + ... + 16858.

It is an arithmetic number, because the mean of its divisors is an integer number (11897718).

Almost surely, 2^135557740 is an apocalyptic number.

135557740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135557740 is an abundant number, since it is smaller than the sum of its proper divisors (149987492).

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

135557740 is a wasteful number, since it uses less digits than its factorization.

135557740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20817 (or 20815 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 135557740 is about 11642.9266080312. The cubic root of 135557740 is about 513.6982740668.

It can be divided in two parts, 1355 and 57740, that added together give a palindrome (59095).

The spelling of 135557740 in words is "one hundred thirty-five million, five hundred fifty-seven thousand, seven hundred forty".