420112611522 has 54 divisors (see below), whose sum is σ = 935736703083. Its totient is φ = 136219739904.

The previous prime is 420112611487. The next prime is 420112611613. The reversal of 420112611522 is 225116211024.

It is a happy number.

420112611522 is a `hidden beast` number, since 4 + 2 + 0 + 1 + 126 + 11 + 522 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 388691149401 + 31421462121 = 623451^2 + 177261^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=458319.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 101744754 + ... + 101748882.

Almost surely, 2^420112611522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420112611522

420112611522 is an abundant number, since it is smaller than the sum of its proper divisors (515624091561).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420112611522 is an frugal number, since it uses more digits than its factorization.

420112611522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340 (or 4171 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 420112611522 its reverse (225116211024), we get a palindrome (645228822546).

The spelling of 420112611522 in words is "four hundred twenty billion, one hundred twelve million, six hundred eleven thousand, five hundred twenty-two".