42429493 has 2 divisors, whose sum is σ = 42429494. Its totient is φ = 42429492.

The previous prime is 42429487. The next prime is 42429553. The reversal of 42429493 is 39492424.

42429493 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., 41190724 + 1238769 = 6418^2 + 1113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42429493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42429463) 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, 21214746 + 21214747.

It is an arithmetic number, because the mean of its divisors is an integer number (21214747).

Almost surely, 2^42429493 is an apocalyptic number.

It is an amenable number.

42429493 is a deficient number, since it is larger than the sum of its proper divisors (1).

42429493 is an equidigital number, since it uses as much as digits as its factorization.

42429493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 42429493 is about 6513.7925204907. The cubic root of 42429493 is about 348.7835128357.

The spelling of 42429493 in words is "forty-two million, four hundred twenty-nine thousand, four hundred ninety-three".