42135343 has 4 divisors (see below), whose sum is σ = 42544528. Its totient is φ = 41726160.

The previous prime is 42135329. The next prime is 42135389. The reversal of 42135343 is 34353124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42135343 - 2⁵ = 42135311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42135143) 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, 204438 + ... + 204643.

It is an arithmetic number, because the mean of its divisors is an integer number (10636132).

Almost surely, 2^42135343 is an apocalyptic number.

42135343 is a deficient number, since it is larger than the sum of its proper divisors (409185).

42135343 is a wasteful number, since it uses less digits than its factorization.

42135343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409184.

The product of its digits is 4320, while the sum is 25.

The square root of 42135343 is about 6491.1742389186. The cubic root of 42135343 is about 347.9756418191.

Adding to 42135343 its reverse (34353124), we get a palindrome (76488467).

The spelling of 42135343 in words is "forty-two million, one hundred thirty-five thousand, three hundred forty-three".