423402001 has 32 divisors (see below), whose sum is σ = 494553600. Its totient is φ = 358874880.

The previous prime is 423401987. The next prime is 423402013. The reversal of 423402001 is 100204324.

423402001 is a nontrivial binomial coefficient, being equal to C(319, 4).

It is not a de Polignac number, because 423402001 - 2¹⁷ = 423270929 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1335495 + ... + 1335811.

It is an arithmetic number, because the mean of its divisors is an integer number (15454800).

Almost surely, 2^423402001 is an apocalyptic number.

423402001 is the 16801-st pentagonal number.

It is an amenable number.

423402001 is a deficient number, since it is larger than the sum of its proper divisors (71151599).

423402001 is a wasteful number, since it uses less digits than its factorization.

423402001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 423402001 is about 20576.7344590924. The cubic root of 423402001 is about 750.9037999050.

Adding to 423402001 its reverse (100204324), we get a palindrome (523606325).

It can be divided in two parts, 42 and 3402001, that added together give a palindrome (3402043).

The spelling of 423402001 in words is "four hundred twenty-three million, four hundred two thousand, one".