42123256333 has 2 divisors, whose sum is σ = 42123256334. Its totient is φ = 42123256332.

The previous prime is 42123256267. The next prime is 42123256361. The reversal of 42123256333 is 33365232124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27181127689 + 14942128644 = 164867^2 + 122238^2 .

It is a cyclic number.

It is not a de Polignac number, because 42123256333 - 2⁹ = 42123255821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42123256033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061628166 + 21061628167.

It is an arithmetic number, because the mean of its divisors is an integer number (21061628167).

Almost surely, 2^42123256333 is an apocalyptic number.

It is an amenable number.

42123256333 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123256333 is an equidigital number, since it uses as much as digits as its factorization.

42123256333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 34.

Adding to 42123256333 its reverse (33365232124), we get a palindrome (75488488457).

The spelling of 42123256333 in words is "forty-two billion, one hundred twenty-three million, two hundred fifty-six thousand, three hundred thirty-three".