420145241 has 2 divisors, whose sum is σ = 420145242. Its totient is φ = 420145240.

The previous prime is 420145213. The next prime is 420145261. The reversal of 420145241 is 142541024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416323216 + 3822025 = 20404^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 420145241 - 2¹⁴ = 420128857 is a prime.

It is not a weakly prime, because it can be changed into another prime (420145211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210072620 + 210072621.

It is an arithmetic number, because the mean of its divisors is an integer number (210072621).

Almost surely, 2^420145241 is an apocalyptic number.

It is an amenable number.

420145241 is a deficient number, since it is larger than the sum of its proper divisors (1).

420145241 is an equidigital number, since it uses as much as digits as its factorization.

420145241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 420145241 is about 20497.4447431869. Note that the first 3 decimals coincide. The cubic root of 420145241 is about 748.9735534805.

Adding to 420145241 its reverse (142541024), we get a palindrome (562686265).

The spelling of 420145241 in words is "four hundred twenty million, one hundred forty-five thousand, two hundred forty-one".