423402571 has 4 divisors (see below), whose sum is σ = 423531472. Its totient is φ = 423273672.

The previous prime is 423402559. The next prime is 423402583. The reversal of 423402571 is 175204324.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (423402559) and next prime (423402583).

It is a cyclic number.

It is not a de Polignac number, because 423402571 - 2¹⁹ = 422878283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423402071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59391 + ... + 66136.

It is an arithmetic number, because the mean of its divisors is an integer number (105882868).

Almost surely, 2^423402571 is an apocalyptic number.

423402571 is a deficient number, since it is larger than the sum of its proper divisors (128901).

423402571 is a wasteful number, since it uses less digits than its factorization.

423402571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128900.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 423402571 is about 20576.7483096820. The cubic root of 423402571 is about 750.9041368700.

Adding to 423402571 its reverse (175204324), we get a palindrome (598606895).

The spelling of 423402571 in words is "four hundred twenty-three million, four hundred two thousand, five hundred seventy-one".