42100519 has 2 divisors, whose sum is σ = 42100520. Its totient is φ = 42100518.

The previous prime is 42100501. The next prime is 42100543. The reversal of 42100519 is 91500124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42100519 - 2¹⁹ = 41576231 is a prime.

It is a super-2 number, since 2×42100519² = 3544907400138722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42100519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42100549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21050259 + 21050260.

It is an arithmetic number, because the mean of its divisors is an integer number (21050260).

Almost surely, 2^42100519 is an apocalyptic number.

42100519 is a deficient number, since it is larger than the sum of its proper divisors (1).

42100519 is an equidigital number, since it uses as much as digits as its factorization.

42100519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 42100519 is about 6488.4912730156. The cubic root of 42100519 is about 347.8797504777.

The spelling of 42100519 in words is "forty-two million, one hundred thousand, five hundred nineteen".