42357019 has 2 divisors, whose sum is σ = 42357020. Its totient is φ = 42357018.

The previous prime is 42356983. The next prime is 42357031. The reversal of 42357019 is 91075324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42357019 - 2⁷ = 42356891 is a prime.

It is a super-2 number, since 2×42357019² = 3588234117132722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42357079) 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, 21178509 + 21178510.

It is an arithmetic number, because the mean of its divisors is an integer number (21178510).

Almost surely, 2^42357019 is an apocalyptic number.

42357019 is a deficient number, since it is larger than the sum of its proper divisors (1).

42357019 is an equidigital number, since it uses as much as digits as its factorization.

42357019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 42357019 is about 6508.2270243132. The cubic root of 42357019 is about 348.5848134521.

The spelling of 42357019 in words is "forty-two million, three hundred fifty-seven thousand, nineteen".