42039619 has 8 divisors (see below), whose sum is σ = 42803280. Its totient is φ = 41280096.

The previous prime is 42039611. The next prime is 42039629. The reversal of 42039619 is 91693024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42039619 - 2³ = 42039611 is a prime.

It is a super-2 number, since 2×42039619² = 3534659131330322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42039611) 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 7 ways as a sum of consecutive naturals, for example, 25257 + ... + 26869.

It is an arithmetic number, because the mean of its divisors is an integer number (5350410).

Almost surely, 2^42039619 is an apocalyptic number.

42039619 is a deficient number, since it is larger than the sum of its proper divisors (763661).

42039619 is a wasteful number, since it uses less digits than its factorization.

42039619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 42039619 is about 6483.7966501117. The cubic root of 42039619 is about 347.7119291070.

The spelling of 42039619 in words is "forty-two million, thirty-nine thousand, six hundred nineteen".