42232350421 has 2 divisors, whose sum is σ = 42232350422. Its totient is φ = 42232350420.

The previous prime is 42232350397. The next prime is 42232350437. The reversal of 42232350421 is 12405323224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31184028100 + 11048322321 = 176590^2 + 105111^2 .

It is a cyclic number.

It is not a de Polignac number, because 42232350421 - 2⁵ = 42232350389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42232350421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42232350451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21116175210 + 21116175211.

It is an arithmetic number, because the mean of its divisors is an integer number (21116175211).

Almost surely, 2^42232350421 is an apocalyptic number.

It is an amenable number.

42232350421 is a deficient number, since it is larger than the sum of its proper divisors (1).

42232350421 is an equidigital number, since it uses as much as digits as its factorization.

42232350421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 42232350421 its reverse (12405323224), we get a palindrome (54637673645).

The spelling of 42232350421 in words is "forty-two billion, two hundred thirty-two million, three hundred fifty thousand, four hundred twenty-one".