236240421 has 4 divisors (see below), whose sum is σ = 314987232. Its totient is φ = 157493612.

The previous prime is 236240419. The next prime is 236240437. The reversal of 236240421 is 124042632.

236240421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 236240421 - 2¹ = 236240419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 236240391 and 236240400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236240461) 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, 39373401 + ... + 39373406.

It is an arithmetic number, because the mean of its divisors is an integer number (78746808).

Almost surely, 2^236240421 is an apocalyptic number.

It is an amenable number.

236240421 is a deficient number, since it is larger than the sum of its proper divisors (78746811).

236240421 is an equidigital number, since it uses as much as digits as its factorization.

236240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78746810.

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

The square root of 236240421 is about 15370.1145408875. The cubic root of 236240421 is about 618.1844397701.

The spelling of 236240421 in words is "two hundred thirty-six million, two hundred forty thousand, four hundred twenty-one".