423057871 has 2 divisors, whose sum is σ = 423057872. Its totient is φ = 423057870.

The previous prime is 423057863. The next prime is 423057893. The reversal of 423057871 is 178750324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423057871 - 2³ = 423057863 is a prime.

It is equal to p_22498534 and since 423057871 and 22498534 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423057871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423057821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211528935 + 211528936.

It is an arithmetic number, because the mean of its divisors is an integer number (211528936).

Almost surely, 2^423057871 is an apocalyptic number.

423057871 is a deficient number, since it is larger than the sum of its proper divisors (1).

423057871 is an equidigital number, since it uses as much as digits as its factorization.

423057871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 423057871 is about 20568.3706452407. The cubic root of 423057871 is about 750.7003064835.

It can be divided in two parts, 42305 and 7871, that added together give a square (50176 = 224²).

The spelling of 423057871 in words is "four hundred twenty-three million, fifty-seven thousand, eight hundred seventy-one".