42004099 has 2 divisors, whose sum is σ = 42004100. Its totient is φ = 42004098.

The previous prime is 42004073. The next prime is 42004103. The reversal of 42004099 is 99040024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42004099 - 2⁹ = 42003587 is a prime.

It is not a weakly prime, because it can be changed into another prime (42004009) 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, 21002049 + 21002050.

It is an arithmetic number, because the mean of its divisors is an integer number (21002050).

Almost surely, 2^42004099 is an apocalyptic number.

42004099 is a deficient number, since it is larger than the sum of its proper divisors (1).

42004099 is an equidigital number, since it uses as much as digits as its factorization.

42004099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 42004099 is about 6481.0569354080. The cubic root of 42004099 is about 347.6139722424.

The spelling of 42004099 in words is "forty-two million, four thousand, ninety-nine".