420440411371 has 2 divisors, whose sum is σ = 420440411372. Its totient is φ = 420440411370.

The previous prime is 420440411327. The next prime is 420440411389. The reversal of 420440411371 is 173114044024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420440411371 - 2¹³ = 420440403179 is a prime.

It is not a weakly prime, because it can be changed into another prime (420440411771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210220205685 + 210220205686.

It is an arithmetic number, because the mean of its divisors is an integer number (210220205686).

Almost surely, 2^420440411371 is an apocalyptic number.

420440411371 is a deficient number, since it is larger than the sum of its proper divisors (1).

420440411371 is an equidigital number, since it uses as much as digits as its factorization.

420440411371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 420440411371 its reverse (173114044024), we get a palindrome (593554455395).

The spelling of 420440411371 in words is "four hundred twenty billion, four hundred forty million, four hundred eleven thousand, three hundred seventy-one".