42034819 has 2 divisors, whose sum is σ = 42034820. Its totient is φ = 42034818.

The previous prime is 42034813. The next prime is 42034847. The reversal of 42034819 is 91843024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42034819 - 2¹³ = 42026627 is a prime.

It is a super-2 number, since 2×42034819² = 3533852016725522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42034813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21017409 + 21017410.

It is an arithmetic number, because the mean of its divisors is an integer number (21017410).

Almost surely, 2^42034819 is an apocalyptic number.

42034819 is a deficient number, since it is larger than the sum of its proper divisors (1).

42034819 is an equidigital number, since it uses as much as digits as its factorization.

42034819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 42034819 is about 6483.4264860489. The cubic root of 42034819 is about 347.6986949181.

The spelling of 42034819 in words is "forty-two million, thirty-four thousand, eight hundred nineteen".