36242021 has 4 divisors (see below), whose sum is σ = 36752544. Its totient is φ = 35731500.

The previous prime is 36242009. The next prime is 36242023. The reversal of 36242021 is 12024263.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12024263 = 461 ⋅26083.

It is a cyclic number.

It is not a de Polignac number, because 36242021 - 2¹⁸ = 35979877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36241984 and 36242002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36242023) 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, 255155 + ... + 255296.

It is an arithmetic number, because the mean of its divisors is an integer number (9188136).

Almost surely, 2^36242021 is an apocalyptic number.

It is an amenable number.

36242021 is a deficient number, since it is larger than the sum of its proper divisors (510523).

36242021 is an equidigital number, since it uses as much as digits as its factorization.

36242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510522.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 36242021 is about 6020.1346330460. The cubic root of 36242021 is about 330.9310133913.

Adding to 36242021 its reverse (12024263), we get a palindrome (48266284).

The spelling of 36242021 in words is "thirty-six million, two hundred forty-two thousand, twenty-one".