6421363542 has 96 divisors (see below), whose sum is σ = 15656962464. Its totient is φ = 1884902400.

The previous prime is 6421363523. The next prime is 6421363547. The reversal of 6421363542 is 2453631246.

6421363542 is a `hidden beast` number, since 6 + 4 + 2 + 13 + 635 + 4 + 2 = 666.

It is a super-3 number, since 3×6421363542³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6421363497 and 6421363506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421363547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1763748 + ... + 1767384.

It is an arithmetic number, because the mean of its divisors is an integer number (163093359).

Almost surely, 2^6421363542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6421363542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7828481232).

6421363542 is an abundant number, since it is smaller than the sum of its proper divisors (9235598922).

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

6421363542 is a wasteful number, since it uses less digits than its factorization.

6421363542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934 (or 3931 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 6421363542 is about 80133.4108970784. The cubic root of 6421363542 is about 1858.6990886012.

Adding to 6421363542 its reverse (2453631246), we get a palindrome (8874994788).

It can be divided in two parts, 6421 and 363542, that added together give a palindrome (369963).

The spelling of 6421363542 in words is "six billion, four hundred twenty-one million, three hundred sixty-three thousand, five hundred forty-two".