42068919 has 4 divisors (see below), whose sum is σ = 56091896. Its totient is φ = 28045944.

The previous prime is 42068893. The next prime is 42068927. The reversal of 42068919 is 91986024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42068919 - 2⁹ = 42068407 is a prime.

It is a super-2 number, since 2×42068919² = 3539587891657122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42068959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7011484 + ... + 7011489.

It is an arithmetic number, because the mean of its divisors is an integer number (14022974).

Almost surely, 2^42068919 is an apocalyptic number.

42068919 is a deficient number, since it is larger than the sum of its proper divisors (14022977).

42068919 is a wasteful number, since it uses less digits than its factorization.

42068919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14022976.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 42068919 is about 6486.0557351907. The cubic root of 42068919 is about 347.7926909678.

The spelling of 42068919 in words is "forty-two million, sixty-eight thousand, nine hundred nineteen".