264342021 has 8 divisors (see below), whose sum is σ = 352824384. Its totient is φ = 176043840.

The previous prime is 264341983. The next prime is 264342073. The reversal of 264342021 is 120243462.

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

It is not a de Polignac number, because 264342021 - 2⁷ = 264341893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 264341982 and 264342000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264349021) 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, 42660 + ... + 48461.

It is an arithmetic number, because the mean of its divisors is an integer number (44103048).

Almost surely, 2^264342021 is an apocalyptic number.

It is an amenable number.

264342021 is a deficient number, since it is larger than the sum of its proper divisors (88482363).

264342021 is an equidigital number, since it uses as much as digits as its factorization.

264342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92091.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 264342021 is about 16258.5983713234. The cubic root of 264342021 is about 641.7837777888.

Adding to 264342021 its reverse (120243462), we get a palindrome (384585483).

The spelling of 264342021 in words is "two hundred sixty-four million, three hundred forty-two thousand, twenty-one".