233542235505421 has 2 divisors, whose sum is σ = 233542235505422. Its totient is φ = 233542235505420.

The previous prime is 233542235505391. The next prime is 233542235505539. The reversal of 233542235505421 is 124505532245332.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153073064952900 + 80469170552521 = 12372270^2 + 8970461^2 .

It is a cyclic number.

It is not a de Polignac number, because 233542235505421 - 2¹¹ = 233542235503373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233542235505721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116771117752710 + 116771117752711.

It is an arithmetic number, because the mean of its divisors is an integer number (116771117752711).

Almost surely, 2^{233542235505421} is an apocalyptic number.

It is an amenable number.

233542235505421 is a deficient number, since it is larger than the sum of its proper divisors (1).

233542235505421 is an equidigital number, since it uses as much as digits as its factorization.

233542235505421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320000, while the sum is 46.

The spelling of 233542235505421 in words is "two hundred thirty-three trillion, five hundred forty-two billion, two hundred thirty-five million, five hundred five thousand, four hundred twenty-one".