420205134140 has 48 divisors (see below), whose sum is σ = 977019732864. Its totient is φ = 150521236800.

The previous prime is 420205134133. The next prime is 420205134163. The reversal of 420205134140 is 41431502024.

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, 14239166 + ... + 14268645.

It is an arithmetic number, because the mean of its divisors is an integer number (20354577768).

Almost surely, 2^420205134140 is an apocalyptic number.

It is an amenable number.

420205134140 is an abundant number, since it is smaller than the sum of its proper divisors (556814598724).

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

420205134140 is a wasteful number, since it uses less digits than its factorization.

420205134140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28507898 (or 28507896 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 420205134140 its reverse (41431502024), we get a palindrome (461636636164).

The spelling of 420205134140 in words is "four hundred twenty billion, two hundred five million, one hundred thirty-four thousand, one hundred forty".