423257441 has 2 divisors, whose sum is σ = 423257442. Its totient is φ = 423257440.

The previous prime is 423257437. The next prime is 423257453. The reversal of 423257441 is 144752324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388917841 + 34339600 = 19721^2 + 5860^2 .

It is a cyclic number.

It is not a de Polignac number, because 423257441 - 2² = 423257437 is a prime.

It is a super-2 number, since 2×423257441² = 358293722723736962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 423257398 and 423257407.

It is not a weakly prime, because it can be changed into another prime (423257141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211628720 + 211628721.

It is an arithmetic number, because the mean of its divisors is an integer number (211628721).

Almost surely, 2^423257441 is an apocalyptic number.

It is an amenable number.

423257441 is a deficient number, since it is larger than the sum of its proper divisors (1).

423257441 is an equidigital number, since it uses as much as digits as its factorization.

423257441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 32.

The square root of 423257441 is about 20573.2214541136. The cubic root of 423257441 is about 750.8183310839.

The spelling of 423257441 in words is "four hundred twenty-three million, two hundred fifty-seven thousand, four hundred forty-one".