420736642241 has 2 divisors, whose sum is σ = 420736642242. Its totient is φ = 420736642240.

The previous prime is 420736642223. The next prime is 420736642373. The reversal of 420736642241 is 142246637024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375401290000 + 45335352241 = 612700^2 + 212921^2 .

It is a cyclic number.

It is not a de Polignac number, because 420736642241 - 2⁶ = 420736642177 is a prime.

It is not a weakly prime, because it can be changed into another prime (420735642241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210368321120 + 210368321121.

It is an arithmetic number, because the mean of its divisors is an integer number (210368321121).

Almost surely, 2^420736642241 is an apocalyptic number.

It is an amenable number.

420736642241 is a deficient number, since it is larger than the sum of its proper divisors (1).

420736642241 is an equidigital number, since it uses as much as digits as its factorization.

420736642241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 420736642241 in words is "four hundred twenty billion, seven hundred thirty-six million, six hundred forty-two thousand, two hundred forty-one".