620412134140 has 48 divisors (see below), whose sum is σ = 1380931941312. Its totient is φ = 233325259776.

The previous prime is 620412134137. The next prime is 620412134171. The reversal of 620412134140 is 41431214026.

It is a super-2 number, since 2×620412134140² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620412134099 and 620412134108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614727 + ... + 1272286.

It is an arithmetic number, because the mean of its divisors is an integer number (28769415444).

Almost surely, 2^620412134140 is an apocalyptic number.

It is an amenable number.

620412134140 is an abundant number, since it is smaller than the sum of its proper divisors (760519807172).

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

620412134140 is a wasteful number, since it uses less digits than its factorization.

620412134140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888006 (or 1888004 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 620412134140 its reverse (41431214026), we get a palindrome (661843348166).

The spelling of 620412134140 in words is "six hundred twenty billion, four hundred twelve million, one hundred thirty-four thousand, one hundred forty".