42032304421 has 2 divisors, whose sum is σ = 42032304422. Its totient is φ = 42032304420.

The previous prime is 42032304389. The next prime is 42032304427. The reversal of 42032304421 is 12440323024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21620467521 + 20411836900 = 147039^2 + 142870^2 .

It is a cyclic number.

It is not a de Polignac number, because 42032304421 - 2⁵ = 42032304389 is a prime.

It is a super-2 number, since 2×42032304421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42032304427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21016152210 + 21016152211.

It is an arithmetic number, because the mean of its divisors is an integer number (21016152211).

Almost surely, 2^42032304421 is an apocalyptic number.

It is an amenable number.

42032304421 is a deficient number, since it is larger than the sum of its proper divisors (1).

42032304421 is an equidigital number, since it uses as much as digits as its factorization.

42032304421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 42032304421 its reverse (12440323024), we get a palindrome (54472627445).

The spelling of 42032304421 in words is "forty-two billion, thirty-two million, three hundred four thousand, four hundred twenty-one".