423346557 has 4 divisors (see below), whose sum is σ = 564462080. Its totient is φ = 282231036.

The previous prime is 423346523. The next prime is 423346559. The reversal of 423346557 is 755643324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 423346557 - 2¹⁸ = 423084413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423346559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70557757 + ... + 70557762.

It is an arithmetic number, because the mean of its divisors is an integer number (141115520).

Almost surely, 2^423346557 is an apocalyptic number.

It is an amenable number.

423346557 is a deficient number, since it is larger than the sum of its proper divisors (141115523).

423346557 is a wasteful number, since it uses less digits than its factorization.

423346557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141115522.

The product of its digits is 302400, while the sum is 39.

The square root of 423346557 is about 20575.3871652516. The cubic root of 423346557 is about 750.8710218142.

The spelling of 423346557 in words is "four hundred twenty-three million, three hundred forty-six thousand, five hundred fifty-seven".