42919005 has 32 divisors (see below), whose sum is σ = 74067840. Its totient is φ = 21150720.

The previous prime is 42918971. The next prime is 42919007. The reversal of 42919005 is 50091924.

It is a happy number.

It is not a de Polignac number, because 42919005 - 2⁸ = 42918749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42919007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9849 + ... + 13521.

It is an arithmetic number, because the mean of its divisors is an integer number (2314620).

Almost surely, 2^42919005 is an apocalyptic number.

It is an amenable number.

42919005 is a deficient number, since it is larger than the sum of its proper divisors (31148835).

42919005 is a wasteful number, since it uses less digits than its factorization.

42919005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 42919005 is about 6551.2598025113. The cubic root of 42919005 is about 350.1197005542.

The spelling of 42919005 in words is "forty-two million, nine hundred nineteen thousand, five".