427136443 has 2 divisors, whose sum is σ = 427136444. Its totient is φ = 427136442.

The previous prime is 427136431. The next prime is 427136449. The reversal of 427136443 is 344631724.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427136443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 427136399 and 427136408.

It is not a weakly prime, because it can be changed into another prime (427136449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213568221 + 213568222.

It is an arithmetic number, because the mean of its divisors is an integer number (213568222).

Almost surely, 2^427136443 is an apocalyptic number.

427136443 is a deficient number, since it is larger than the sum of its proper divisors (1).

427136443 is an equidigital number, since it uses as much as digits as its factorization.

427136443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 34.

The square root of 427136443 is about 20667.2795258592. The cubic root of 427136443 is about 753.1050195465.

The spelling of 427136443 in words is "four hundred twenty-seven million, one hundred thirty-six thousand, four hundred forty-three".