264142219 has 4 divisors (see below), whose sum is σ = 288155160. Its totient is φ = 240129280.

The previous prime is 264142217. The next prime is 264142231. The reversal of 264142219 is 912241462.

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 264142219 - 2¹ = 264142217 is a prime.

It is a super-2 number, since 2×264142219² = 139542223716487922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264142217) 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, 12006454 + ... + 12006475.

It is an arithmetic number, because the mean of its divisors is an integer number (72038790).

Almost surely, 2^264142219 is an apocalyptic number.

264142219 is a deficient number, since it is larger than the sum of its proper divisors (24012941).

264142219 is a wasteful number, since it uses less digits than its factorization.

264142219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24012940.

The product of its digits is 6912, while the sum is 31.

The square root of 264142219 is about 16252.4527072070. The cubic root of 264142219 is about 641.6220403514.

The spelling of 264142219 in words is "two hundred sixty-four million, one hundred forty-two thousand, two hundred nineteen".