135404142 has 16 divisors (see below), whose sum is σ = 271015680. Its totient is φ = 45100152.

The previous prime is 135404117. The next prime is 135404147. The reversal of 135404142 is 241404531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135404147) 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, 609 + ... + 16467.

It is an arithmetic number, because the mean of its divisors is an integer number (16938480).

Almost surely, 2^135404142 is an apocalyptic number.

135404142 is an abundant number, since it is smaller than the sum of its proper divisors (135611538).

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

135404142 is a wasteful number, since it uses less digits than its factorization.

135404142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17287.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 135404142 is about 11636.3285446914. The cubic root of 135404142 is about 513.5041800287.

Adding to 135404142 its reverse (241404531), we get a palindrome (376808673).

The spelling of 135404142 in words is "one hundred thirty-five million, four hundred four thousand, one hundred forty-two".