424144014421 has 2 divisors, whose sum is σ = 424144014422. Its totient is φ = 424144014420.

The previous prime is 424144014397. The next prime is 424144014431. The reversal of 424144014421 is 124410441424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275190471396 + 148953543025 = 524586^2 + 385945^2 .

It is a cyclic number.

It is not a de Polignac number, because 424144014421 - 2¹¹ = 424144012373 is a prime.

It is a super-3 number, since 3×424144014421³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424144014431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212072007210 + 212072007211.

It is an arithmetic number, because the mean of its divisors is an integer number (212072007211).

Almost surely, 2^424144014421 is an apocalyptic number.

It is an amenable number.

424144014421 is a deficient number, since it is larger than the sum of its proper divisors (1).

424144014421 is an equidigital number, since it uses as much as digits as its factorization.

424144014421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 424144014421 its reverse (124410441424), we get a palindrome (548554455845).

The spelling of 424144014421 in words is "four hundred twenty-four billion, one hundred forty-four million, fourteen thousand, four hundred twenty-one".