42403019 has 2 divisors, whose sum is σ = 42403020. Its totient is φ = 42403018.

The previous prime is 42402967. The next prime is 42403033. The reversal of 42403019 is 91030424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42403019 is a prime.

It is a super-2 number, since 2×42403019² = 3596032040628722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42402985 and 42403003.

It is not a weakly prime, because it can be changed into another prime (42403069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201509 + 21201510.

It is an arithmetic number, because the mean of its divisors is an integer number (21201510).

Almost surely, 2^42403019 is an apocalyptic number.

42403019 is a deficient number, since it is larger than the sum of its proper divisors (1).

42403019 is an equidigital number, since it uses as much as digits as its factorization.

42403019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42403019 is about 6511.7600539332. The cubic root of 42403019 is about 348.7109562625.

The spelling of 42403019 in words is "forty-two million, four hundred three thousand, nineteen".