420045423 has 16 divisors (see below), whose sum is σ = 657369600. Its totient is φ = 233538336.

The previous prime is 420045421. The next prime is 420045427. The reversal of 420045423 is 324540024.

It is not a de Polignac number, because 420045423 - 2¹ = 420045421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420045393 and 420045402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420045421) 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, 269523 + ... + 271076.

It is an arithmetic number, because the mean of its divisors is an integer number (41085600).

Almost surely, 2^420045423 is an apocalyptic number.

420045423 is a deficient number, since it is larger than the sum of its proper divisors (237324177).

420045423 is a wasteful number, since it uses less digits than its factorization.

420045423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540646.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 420045423 is about 20495.0097096830. The cubic root of 420045423 is about 748.9142351336.

Adding to 420045423 its reverse (324540024), we get a palindrome (744585447).

The spelling of 420045423 in words is "four hundred twenty million, forty-five thousand, four hundred twenty-three".