236246008421 has 4 divisors (see below), whose sum is σ = 240703480332. Its totient is φ = 231788536512.

The previous prime is 236246008387. The next prime is 236246008451. The reversal of 236246008421 is 124800642632.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 191572536100 + 44673472321 = 437690^2 + 211361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-236246008421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236246008451) 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, 2228735876 + ... + 2228735981.

It is an arithmetic number, because the mean of its divisors is an integer number (60175870083).

Almost surely, 2^236246008421 is an apocalyptic number.

It is an amenable number.

236246008421 is a deficient number, since it is larger than the sum of its proper divisors (4457471911).

236246008421 is an equidigital number, since it uses as much as digits as its factorization.

236246008421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4457471910.

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 236246008421 in words is "two hundred thirty-six billion, two hundred forty-six million, eight thousand, four hundred twenty-one".