420641141 has 2 divisors, whose sum is σ = 420641142. Its totient is φ = 420641140.

The previous prime is 420641119. The next prime is 420641147. The reversal of 420641141 is 141146024.

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., 306600100 + 114041041 = 17510^2 + 10679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420641141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420641147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210320570 + 210320571.

It is an arithmetic number, because the mean of its divisors is an integer number (210320571).

Almost surely, 2^420641141 is an apocalyptic number.

It is an amenable number.

420641141 is a deficient number, since it is larger than the sum of its proper divisors (1).

420641141 is an equidigital number, since it uses as much as digits as its factorization.

420641141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 420641141 is about 20509.5378056162. The cubic root of 420641141 is about 749.2681103119.

Adding to 420641141 its reverse (141146024), we get a palindrome (561787165).

The spelling of 420641141 in words is "four hundred twenty million, six hundred forty-one thousand, one hundred forty-one".