422536020642 has 30 divisors (see below), whose sum is σ = 946812215019. Its totient is φ = 140842582380.

The previous prime is 422536020637. The next prime is 422536020649. The reversal of 422536020642 is 246020635224.

422536020642 is a `hidden beast` number, since 4 + 2 + 2 + 5 + 3 + 6 + 0 + 2 + 0 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 211268010321 + 211268010321 = 459639^2 + 459639^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=459639.

It is a junction number, because it is equal to n+sod(n) for n = 422536020597 and 422536020606.

It is not an unprimeable number, because it can be changed into a prime (422536020649) 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 14 ways as a sum of consecutive naturals, for example, 8247967 + ... + 8299037.

Almost surely, 2^422536020642 is an apocalyptic number.

422536020642 is an abundant number, since it is smaller than the sum of its proper divisors (524276194377).

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

422536020642 is an frugal number, since it uses more digits than its factorization.

422536020642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102156 (or 51076 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 422536020642 its reverse (246020635224), we get a palindrome (668556655866).

The spelling of 422536020642 in words is "four hundred twenty-two billion, five hundred thirty-six million, twenty thousand, six hundred forty-two".