42687219 has 8 divisors (see below), whose sum is σ = 57420432. Its totient is φ = 28206080.

The previous prime is 42687209. The next prime is 42687269. The reversal of 42687219 is 91278624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42687219 is a prime.

It is a super-3 number, since 3×42687219³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (42687209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62622 + ... + 63299.

It is an arithmetic number, because the mean of its divisors is an integer number (7177554).

Almost surely, 2^42687219 is an apocalyptic number.

42687219 is a deficient number, since it is larger than the sum of its proper divisors (14733213).

42687219 is a wasteful number, since it uses less digits than its factorization.

42687219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126037.

The product of its digits is 48384, while the sum is 39.

The square root of 42687219 is about 6533.5456683182. The cubic root of 42687219 is about 349.4882835035.

The spelling of 42687219 in words is "forty-two million, six hundred eighty-seven thousand, two hundred nineteen".