42342043 has 2 divisors, whose sum is σ = 42342044. Its totient is φ = 42342042.

The previous prime is 42341987. The next prime is 42342049. The reversal of 42342043 is 34024324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42342043 is a prime.

It is not a weakly prime, because it can be changed into another prime (42342049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21171021 + 21171022.

It is an arithmetic number, because the mean of its divisors is an integer number (21171022).

Almost surely, 2^42342043 is an apocalyptic number.

42342043 is a deficient number, since it is larger than the sum of its proper divisors (1).

42342043 is an equidigital number, since it uses as much as digits as its factorization.

42342043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 42342043 is about 6507.0763788356. The cubic root of 42342043 is about 348.5437260349.

Adding to 42342043 its reverse (34024324), we get a palindrome (76366367).

The spelling of 42342043 in words is "forty-two million, three hundred forty-two thousand, forty-three".