42105994 has 16 divisors (see below), whose sum is σ = 73656000. Its totient is φ = 18045132.

The previous prime is 42105977. The next prime is 42106013. The reversal of 42105994 is 49950124.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 30004 + ... + 31375.

It is an arithmetic number, because the mean of its divisors is an integer number (4603500).

Almost surely, 2^42105994 is an apocalyptic number.

42105994 is a deficient number, since it is larger than the sum of its proper divisors (31550006).

42105994 is an equidigital number, since it uses as much as digits as its factorization.

42105994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61402 (or 61388 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 42105994 is about 6488.9131601525. The cubic root of 42105994 is about 347.8948299361.

The spelling of 42105994 in words is "forty-two million, one hundred five thousand, nine hundred ninety-four".