420112611523 has 16 divisors (see below), whose sum is σ = 462685219200. Its totient is φ = 378271600000.

The previous prime is 420112611487. The next prime is 420112611613. The reversal of 420112611523 is 325116211024.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420112611523 is a prime.

It is a super-3 number, since 3×420112611523³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420112611491 and 420112611500.

It is not an unprimeable number, because it can be changed into a prime (420112615523) 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, 5966523 + ... + 6036523.

It is an arithmetic number, because the mean of its divisors is an integer number (28917826200).

Almost surely, 2^420112611523 is an apocalyptic number.

420112611523 is a deficient number, since it is larger than the sum of its proper divisors (42572607677).

420112611523 is a wasteful number, since it uses less digits than its factorization.

420112611523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75218.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 420112611523 its reverse (325116211024), we get a palindrome (745228822547).

The spelling of 420112611523 in words is "four hundred twenty billion, one hundred twelve million, six hundred eleven thousand, five hundred twenty-three".