6420057100 has 18 divisors (see below), whose sum is σ = 13931524124. Its totient is φ = 2568022800.

The previous prime is 6420057043. The next prime is 6420057107. The reversal of 6420057100 is 17500246.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (6420057107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32100186 + ... + 32100385.

Almost surely, 2^6420057100 is an apocalyptic number.

It is an amenable number.

6420057100 is an abundant number, since it is smaller than the sum of its proper divisors (7511467024).

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

6420057100 is a wasteful number, since it uses less digits than its factorization.

6420057100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64200585 (or 64200578 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 6420057100 is about 80125.2588139346. The cubic root of 6420057100 is about 1858.5730277712.

Adding to 6420057100 its reverse (17500246), we get a palindrome (6437557346).

The spelling of 6420057100 in words is "six billion, four hundred twenty million, fifty-seven thousand, one hundred".