264234021 has 4 divisors (see below), whose sum is σ = 352312032. Its totient is φ = 176156012.

The previous prime is 264234013. The next prime is 264234029. The reversal of 264234021 is 120432462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (264234013) and next prime (264234029).

It is a cyclic number.

It is not a de Polignac number, because 264234021 - 2³ = 264234013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 264233982 and 264234000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264234029) 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, 44039001 + ... + 44039006.

It is an arithmetic number, because the mean of its divisors is an integer number (88078008).

Almost surely, 2^264234021 is an apocalyptic number.

It is an amenable number.

264234021 is a deficient number, since it is larger than the sum of its proper divisors (88078011).

264234021 is an equidigital number, since it uses as much as digits as its factorization.

264234021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88078010.

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

The square root of 264234021 is about 16255.2767125017. The cubic root of 264234021 is about 641.6963631465.

Adding to 264234021 its reverse (120432462), we get a palindrome (384666483).

It can be divided in two parts, 2642 and 34021, that added together give a palindrome (36663).

The spelling of 264234021 in words is "two hundred sixty-four million, two hundred thirty-four thousand, twenty-one".