42135043 has 4 divisors (see below), whose sum is σ = 42148080. Its totient is φ = 42122008.

The previous prime is 42135031. The next prime is 42135047. The reversal of 42135043 is 34053124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42135043 - 2²¹ = 40037891 is a prime.

It is a super-2 number, since 2×42135043² = 3550723697223698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42135047) 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, 2373 + ... + 9481.

It is an arithmetic number, because the mean of its divisors is an integer number (10537020).

Almost surely, 2^42135043 is an apocalyptic number.

42135043 is a deficient number, since it is larger than the sum of its proper divisors (13037).

42135043 is an equidigital number, since it uses as much as digits as its factorization.

42135043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13036.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 42135043 is about 6491.1511305777. The cubic root of 42135043 is about 347.9748159650.

Adding to 42135043 its reverse (34053124), we get a palindrome (76188167).

The spelling of 42135043 in words is "forty-two million, one hundred thirty-five thousand, forty-three".