42146999 has 2 divisors, whose sum is σ = 42147000. Its totient is φ = 42146998.

The previous prime is 42146989. The next prime is 42147013. The reversal of 42146999 is 99964124.

42146999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42146999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42146989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21073499 + 21073500.

It is an arithmetic number, because the mean of its divisors is an integer number (21073500).

Almost surely, 2^42146999 is an apocalyptic number.

42146999 is a deficient number, since it is larger than the sum of its proper divisors (1).

42146999 is an equidigital number, since it uses as much as digits as its factorization.

42146999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 42146999 is about 6492.0720113073. The cubic root of 42146999 is about 348.0077259702.

The spelling of 42146999 in words is "forty-two million, one hundred forty-six thousand, nine hundred ninety-nine".