42238519 has 2 divisors, whose sum is σ = 42238520. Its totient is φ = 42238518.

The previous prime is 42238517. The next prime is 42238541. The reversal of 42238519 is 91583224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42238519 - 2¹ = 42238517 is a prime.

It is a super-2 number, since 2×42238519² = 3568184974626722, which contains 22 as substring.

Together with 42238517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42238517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21119259 + 21119260.

It is an arithmetic number, because the mean of its divisors is an integer number (21119260).

Almost surely, 2^42238519 is an apocalyptic number.

42238519 is a deficient number, since it is larger than the sum of its proper divisors (1).

42238519 is an equidigital number, since it uses as much as digits as its factorization.

42238519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 42238519 is about 6499.1167861487. The cubic root of 42238519 is about 348.2594373796.

The spelling of 42238519 in words is "forty-two million, two hundred thirty-eight thousand, five hundred nineteen".