42068145 has 32 divisors (see below), whose sum is σ = 77172480. Its totient is φ = 19169280.

The previous prime is 42068141. The next prime is 42068153. The reversal of 42068145 is 54186024.

It is not a de Polignac number, because 42068145 - 2² = 42068141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42068141) 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 in 31 ways as a sum of consecutive naturals, for example, 54321 + ... + 55089.

It is an arithmetic number, because the mean of its divisors is an integer number (2411640).

Almost surely, 2^42068145 is an apocalyptic number.

It is an amenable number.

42068145 is a deficient number, since it is larger than the sum of its proper divisors (35104335).

42068145 is a wasteful number, since it uses less digits than its factorization.

42068145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 42068145 is about 6485.9960684539. The cubic root of 42068145 is about 347.7905580139.

The spelling of 42068145 in words is "forty-two million, sixty-eight thousand, one hundred forty-five".