135030440 has 32 divisors (see below), whose sum is σ = 305532000. Its totient is φ = 53707584.

The previous prime is 135030437. The next prime is 135030443. The reversal of 135030440 is 44030531.

It is an interprime number because it is at equal distance from previous prime (135030437) and next prime (135030443).

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

It is not an unprimeable number, because it can be changed into a prime (135030443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2270 + ... + 16589.

It is an arithmetic number, because the mean of its divisors is an integer number (9547875).

Almost surely, 2^135030440 is an apocalyptic number.

135030440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135030440 is an abundant number, since it is smaller than the sum of its proper divisors (170501560).

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

135030440 is a wasteful number, since it uses less digits than its factorization.

135030440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19049 (or 19045 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 135030440 is about 11620.2598938234. The cubic root of 135030440 is about 513.0313378964.

Adding to 135030440 its reverse (44030531), we get a palindrome (179060971).

Subtracting from 135030440 its reverse (44030531), we obtain a palindrome (90999909).

The spelling of 135030440 in words is "one hundred thirty-five million, thirty thousand, four hundred forty".