423423125102521 has 2 divisors, whose sum is σ = 423423125102522. Its totient is φ = 423423125102520.

The previous prime is 423423125102447. The next prime is 423423125102533. The reversal of 423423125102521 is 125201521324324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423181016820496 + 242108282025 = 20571364^2 + 492045^2 .

It is a cyclic number.

It is not a de Polignac number, because 423423125102521 - 2¹³ = 423423125094329 is a prime.

It is not a weakly prime, because it can be changed into another prime (423423125132521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211711562551260 + 211711562551261.

It is an arithmetic number, because the mean of its divisors is an integer number (211711562551261).

Almost surely, 2^{423423125102521} is an apocalyptic number.

It is an amenable number.

423423125102521 is a deficient number, since it is larger than the sum of its proper divisors (1).

423423125102521 is an equidigital number, since it uses as much as digits as its factorization.

423423125102521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 423423125102521 its reverse (125201521324324), we get a palindrome (548624646426845).

The spelling of 423423125102521 in words is "four hundred twenty-three trillion, four hundred twenty-three billion, one hundred twenty-five million, one hundred two thousand, five hundred twenty-one".