42424429 has 2 divisors, whose sum is σ = 42424430. Its totient is φ = 42424428.

The previous prime is 42424423. The next prime is 42424451. The reversal of 42424429 is 92442424.

42424429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29138404 + 13286025 = 5398^2 + 3645^2 .

It is a cyclic number.

It is not a de Polignac number, because 42424429 - 2⁷ = 42424301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42424429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42424423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212214 + 21212215.

It is an arithmetic number, because the mean of its divisors is an integer number (21212215).

Almost surely, 2^42424429 is an apocalyptic number.

It is an amenable number.

42424429 is a deficient number, since it is larger than the sum of its proper divisors (1).

42424429 is an equidigital number, since it uses as much as digits as its factorization.

42424429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 31.

The square root of 42424429 is about 6513.4037952518. The cubic root of 42424429 is about 348.7696364033.

The spelling of 42424429 in words is "forty-two million, four hundred twenty-four thousand, four hundred twenty-nine".