42608429 has 2 divisors, whose sum is σ = 42608430. Its totient is φ = 42608428.

The previous prime is 42608411. The next prime is 42608441. The reversal of 42608429 is 92480624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39375625 + 3232804 = 6275^2 + 1798^2 .

It is a cyclic number.

It is not a de Polignac number, because 42608429 - 2⁸ = 42608173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42608459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21304214 + 21304215.

It is an arithmetic number, because the mean of its divisors is an integer number (21304215).

Almost surely, 2^42608429 is an apocalyptic number.

It is an amenable number.

42608429 is a deficient number, since it is larger than the sum of its proper divisors (1).

42608429 is an equidigital number, since it uses as much as digits as its factorization.

42608429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 42608429 is about 6527.5132324646. The cubic root of 42608429 is about 349.2731282295.

The spelling of 42608429 in words is "forty-two million, six hundred eight thousand, four hundred twenty-nine".