420411523 has 12 divisors (see below), whose sum is σ = 489771360. Its totient is φ = 359821392.

The previous prime is 420411493. The next prime is 420411571. The reversal of 420411523 is 325114024.

It is not a de Polignac number, because 420411523 - 2⁹ = 420411011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420411494 and 420411503.

It is not an unprimeable number, because it can be changed into a prime (420411323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29265 + ... + 41197.

It is an arithmetic number, because the mean of its divisors is an integer number (40814280).

Almost surely, 2^420411523 is an apocalyptic number.

420411523 is a deficient number, since it is larger than the sum of its proper divisors (69359837).

420411523 is a wasteful number, since it uses less digits than its factorization.

420411523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12666 (or 12659 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 420411523 is about 20503.9392068939. The cubic root of 420411523 is about 749.1317496133.

Adding to 420411523 its reverse (325114024), we get a palindrome (745525547).

The spelling of 420411523 in words is "four hundred twenty million, four hundred eleven thousand, five hundred twenty-three".