425421943 has 2 divisors, whose sum is σ = 425421944. Its totient is φ = 425421942.

The previous prime is 425421929. The next prime is 425421947. The reversal of 425421943 is 349124524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425421943 - 2⁹ = 425421431 is a prime.

It is equal to p_22617763 and since 425421943 and 22617763 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 425421899 and 425421908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425421947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212710971 + 212710972.

It is an arithmetic number, because the mean of its divisors is an integer number (212710972).

Almost surely, 2^425421943 is an apocalyptic number.

425421943 is a deficient number, since it is larger than the sum of its proper divisors (1).

425421943 is an equidigital number, since it uses as much as digits as its factorization.

425421943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 425421943 is about 20625.7592102691. The cubic root of 425421943 is about 752.0960289083.

The spelling of 425421943 in words is "four hundred twenty-five million, four hundred twenty-one thousand, nine hundred forty-three".