42494429 has 2 divisors, whose sum is σ = 42494430. Its totient is φ = 42494428.

The previous prime is 42494383. The next prime is 42494447. The reversal of 42494429 is 92449424.

42494429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41306329 + 1188100 = 6427^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 42494429 - 2¹² = 42490333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42494392 and 42494401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42494479) 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, 21247214 + 21247215.

It is an arithmetic number, because the mean of its divisors is an integer number (21247215).

Almost surely, 2^42494429 is an apocalyptic number.

It is an amenable number.

42494429 is a deficient number, since it is larger than the sum of its proper divisors (1).

42494429 is an equidigital number, since it uses as much as digits as its factorization.

42494429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 42494429 is about 6518.7751150044. The cubic root of 42494429 is about 348.9613534544.

The spelling of 42494429 in words is "forty-two million, four hundred ninety-four thousand, four hundred twenty-nine".