42911219 has 4 divisors (see below), whose sum is σ = 46212096. Its totient is φ = 39610344.

The previous prime is 42911203. The next prime is 42911227. The reversal of 42911219 is 91211924.

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

It is a cyclic number.

It is not a de Polignac number, because 42911219 - 2⁴ = 42911203 is a prime.

It is a super-2 number, since 2×42911219² = 3682745432131922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42911191 and 42911200.

It is not an unprimeable number, because it can be changed into a prime (42911269) 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, 1650419 + ... + 1650444.

It is an arithmetic number, because the mean of its divisors is an integer number (11553024).

Almost surely, 2^42911219 is an apocalyptic number.

42911219 is a deficient number, since it is larger than the sum of its proper divisors (3300877).

42911219 is a wasteful number, since it uses less digits than its factorization.

42911219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300876.

The product of its digits is 1296, while the sum is 29.

The square root of 42911219 is about 6550.6655387067. The cubic root of 42911219 is about 350.0985273633.

The spelling of 42911219 in words is "forty-two million, nine hundred eleven thousand, two hundred nineteen".