423427565 has 16 divisors (see below), whose sum is σ = 555780096. Its totient is φ = 307128000.

The previous prime is 423427561. The next prime is 423427567. The reversal of 423427565 is 565724324.

It is not a de Polignac number, because 423427565 - 2² = 423427561 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 (423427561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11015 + ... + 31115.

It is an arithmetic number, because the mean of its divisors is an integer number (34736256).

Almost surely, 2^423427565 is an apocalyptic number.

It is an amenable number.

423427565 is a deficient number, since it is larger than the sum of its proper divisors (132352531).

423427565 is a wasteful number, since it uses less digits than its factorization.

423427565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20500.

The product of its digits is 201600, while the sum is 38.

The square root of 423427565 is about 20577.3556367187. The cubic root of 423427565 is about 750.9189121926.

The spelling of 423427565 in words is "four hundred twenty-three million, four hundred twenty-seven thousand, five hundred sixty-five".