42630019 has 2 divisors, whose sum is σ = 42630020. Its totient is φ = 42630018.

The previous prime is 42630011. The next prime is 42630083. The reversal of 42630019 is 91003624.

42630019 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 is a cyclic number.

It is not a de Polignac number, because 42630019 - 2³ = 42630011 is a prime.

It is a super-2 number, since 2×42630019² = 3634637039880722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42629975 and 42630002.

It is not a weakly prime, because it can be changed into another prime (42630011) 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, 21315009 + 21315010.

It is an arithmetic number, because the mean of its divisors is an integer number (21315010).

Almost surely, 2^42630019 is an apocalyptic number.

42630019 is a deficient number, since it is larger than the sum of its proper divisors (1).

42630019 is an equidigital number, since it uses as much as digits as its factorization.

42630019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 42630019 is about 6529.1667921719. The cubic root of 42630019 is about 349.3321113440.

The spelling of 42630019 in words is "forty-two million, six hundred thirty thousand, nineteen".