42434111 has 4 divisors (see below), whose sum is σ = 42457224. Its totient is φ = 42411000.

The previous prime is 42434089. The next prime is 42434137. The reversal of 42434111 is 11143424.

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 42434111 - 2¹⁰ = 42433087 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 (42434141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8540 + ... + 12561.

It is an arithmetic number, because the mean of its divisors is an integer number (10614306).

Almost surely, 2^42434111 is an apocalyptic number.

42434111 is a deficient number, since it is larger than the sum of its proper divisors (23113).

42434111 is a wasteful number, since it uses less digits than its factorization.

42434111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23112.

The product of its digits is 384, while the sum is 20.

The square root of 42434111 is about 6514.1469894377. The cubic root of 42434111 is about 348.7961661712.

Adding to 42434111 its reverse (11143424), we get a palindrome (53577535).

It can be divided in two parts, 42434 and 111, that multiplied together give a palindrome (4710174).

The spelling of 42434111 in words is "forty-two million, four hundred thirty-four thousand, one hundred eleven".