423378571 has 24 divisors (see below), whose sum is σ = 541235520. Its totient is φ = 327474000.

The previous prime is 423378551. The next prime is 423378581. The reversal of 423378571 is 175873324.

It is a happy number.

It is not a de Polignac number, because 423378571 - 2⁷ = 423378443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423378521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72096 + ... + 77746.

It is an arithmetic number, because the mean of its divisors is an integer number (22551480).

Almost surely, 2^423378571 is an apocalyptic number.

423378571 is a deficient number, since it is larger than the sum of its proper divisors (117856949).

423378571 is a wasteful number, since it uses less digits than its factorization.

423378571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5815 (or 5808 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 423378571 is about 20576.1651188942. The cubic root of 423378571 is about 750.8899486080.

The spelling of 423378571 in words is "four hundred twenty-three million, three hundred seventy-eight thousand, five hundred seventy-one".