42764219 has 4 divisors (see below), whose sum is σ = 43674144. Its totient is φ = 41854296.

The previous prime is 42764209. The next prime is 42764237. The reversal of 42764219 is 91246724.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42764219 is a prime.

It is a super-2 number, since 2×42764219² = 3657556853359922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42764209) 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, 454892 + ... + 454985.

It is an arithmetic number, because the mean of its divisors is an integer number (10918536).

Almost surely, 2^42764219 is an apocalyptic number.

42764219 is a deficient number, since it is larger than the sum of its proper divisors (909925).

42764219 is an equidigital number, since it uses as much as digits as its factorization.

42764219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909924.

The product of its digits is 24192, while the sum is 35.

The square root of 42764219 is about 6539.4356790170. The cubic root of 42764219 is about 349.6982951029.

It can be divided in two parts, 427 and 64219, that added together give a palindrome (64646).

The spelling of 42764219 in words is "forty-two million, seven hundred sixty-four thousand, two hundred nineteen".