135404020 has 12 divisors (see below), whose sum is σ = 284348484. Its totient is φ = 54161600.

The previous prime is 135404011. The next prime is 135404023. The reversal of 135404020 is 20404531.

It can be written as a sum of positive squares in 2 ways, for example, as 103999204 + 31404816 = 10198^2 + 5604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135404023) 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 3 ways as a sum of consecutive naturals, for example, 3385081 + ... + 3385120.

It is an arithmetic number, because the mean of its divisors is an integer number (23695707).

Almost surely, 2^135404020 is an apocalyptic number.

135404020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135404020 is an abundant number, since it is smaller than the sum of its proper divisors (148944464).

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

135404020 is a wasteful number, since it uses less digits than its factorization.

135404020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770210 (or 6770208 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 135404020 is about 11636.3233024869. The cubic root of 135404020 is about 513.5040258051.

Adding to 135404020 its reverse (20404531), we get a palindrome (155808551).

The spelling of 135404020 in words is "one hundred thirty-five million, four hundred four thousand, twenty".