135404042 has 8 divisors (see below), whose sum is σ = 205553376. Its totient is φ = 66886252.

The previous prime is 135404023. The next prime is 135404047. The reversal of 135404042 is 240404531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 135403999 and 135404017.

It is not an unprimeable number, because it can be changed into a prime (135404047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407678 + ... + 408009.

It is an arithmetic number, because the mean of its divisors is an integer number (25694172).

Almost surely, 2^135404042 is an apocalyptic number.

135404042 is a deficient number, since it is larger than the sum of its proper divisors (70149334).

135404042 is an equidigital number, since it uses as much as digits as its factorization.

135404042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815772.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 135404042 is about 11636.3242478027. The cubic root of 135404042 is about 513.5040536159.

Adding to 135404042 its reverse (240404531), we get a palindrome (375808573).

The spelling of 135404042 in words is "one hundred thirty-five million, four hundred four thousand, forty-two".