420201531443123 has 2 divisors, whose sum is σ = 420201531443124. Its totient is φ = 420201531443122.

The previous prime is 420201531443047. The next prime is 420201531443209. The reversal of 420201531443123 is 321344135102024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420201531443123 - 2³⁴ = 420184351573939 is a prime.

It is not a weakly prime, because it can be changed into another prime (420201531449123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210100765721561 + 210100765721562.

It is an arithmetic number, because the mean of its divisors is an integer number (210100765721562).

Almost surely, 2^{420201531443123} is an apocalyptic number.

420201531443123 is a deficient number, since it is larger than the sum of its proper divisors (1).

420201531443123 is an equidigital number, since it uses as much as digits as its factorization.

420201531443123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 420201531443123 its reverse (321344135102024), we get a palindrome (741545666545147).

The spelling of 420201531443123 in words is "four hundred twenty trillion, two hundred one billion, five hundred thirty-one million, four hundred forty-three thousand, one hundred twenty-three".