420442123140 has 72 divisors (see below), whose sum is σ = 1373444276568. Its totient is φ = 103493445120.

The previous prime is 420442123121. The next prime is 420442123193. The reversal of 420442123140 is 41321244024.

420442123140 is a `hidden beast` number, since 4 + 2 + 0 + 4 + 421 + 231 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3480056064 + 416962067076 = 58992^2 + 645726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89835721 + ... + 89840400.

Almost surely, 2^420442123140 is an apocalyptic number.

It is an amenable number.

420442123140 is an abundant number, since it is smaller than the sum of its proper divisors (953002153428).

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

420442123140 is a wasteful number, since it uses less digits than its factorization.

420442123140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179676149 (or 179676144 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 420442123140 its reverse (41321244024), we get a palindrome (461763367164).

The spelling of 420442123140 in words is "four hundred twenty billion, four hundred forty-two million, one hundred twenty-three thousand, one hundred forty".