423243401 has 16 divisors (see below), whose sum is σ = 506440704. Its totient is φ = 345836304.

The previous prime is 423243391. The next prime is 423243433. The reversal of 423243401 is 104342324.

It is a cyclic number.

It is not a de Polignac number, because 423243401 - 2¹⁸ = 422981257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (423243701) 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, 45146 + ... + 53708.

It is an arithmetic number, because the mean of its divisors is an integer number (31652544).

Almost surely, 2^423243401 is an apocalyptic number.

It is an amenable number.

423243401 is a deficient number, since it is larger than the sum of its proper divisors (83197303).

423243401 is a wasteful number, since it uses less digits than its factorization.

423243401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8900.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 423243401 is about 20572.8802310226. The cubic root of 423243401 is about 750.8100291184.

Adding to 423243401 its reverse (104342324), we get a palindrome (527585725).

The spelling of 423243401 in words is "four hundred twenty-three million, two hundred forty-three thousand, four hundred one".