42434969 has 2 divisors, whose sum is σ = 42434970. Its totient is φ = 42434968.

The previous prime is 42434921. The next prime is 42434989. The reversal of 42434969 is 96943424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41434969 + 1000000 = 6437^2 + 1000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42434969 is a prime.

It is a super-2 number, since 2×42434969² = 3601453188061922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42434989) 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 as a sum of consecutive naturals, namely, 21217484 + 21217485.

It is an arithmetic number, because the mean of its divisors is an integer number (21217485).

Almost surely, 2^42434969 is an apocalyptic number.

It is an amenable number.

42434969 is a deficient number, since it is larger than the sum of its proper divisors (1).

42434969 is an equidigital number, since it uses as much as digits as its factorization.

42434969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 41.

The square root of 42434969 is about 6514.2128457704. The cubic root of 42434969 is about 348.7985169930.

The spelling of 42434969 in words is "forty-two million, four hundred thirty-four thousand, nine hundred sixty-nine".