42651019 has 2 divisors, whose sum is σ = 42651020. Its totient is φ = 42651018.

The previous prime is 42651013. The next prime is 42651109. The reversal of 42651019 is 91015624.

42651019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (42651109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42651019 - 2⁷ = 42650891 is a prime.

It is a super-2 number, since 2×42651019² = 3638218843476722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42651013) 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, 21325509 + 21325510.

It is an arithmetic number, because the mean of its divisors is an integer number (21325510).

Almost surely, 2^42651019 is an apocalyptic number.

42651019 is a deficient number, since it is larger than the sum of its proper divisors (1).

42651019 is an equidigital number, since it uses as much as digits as its factorization.

42651019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 42651019 is about 6530.7747626143. The cubic root of 42651019 is about 349.3894634966.

The spelling of 42651019 in words is "forty-two million, six hundred fifty-one thousand, nineteen".