6542420012 has 24 divisors (see below), whose sum is σ = 12649797216. Its totient is φ = 2944924928.

The previous prime is 6542419987. The next prime is 6542420057. The reversal of 6542420012 is 2100242456.

It is a super-2 number, since 2×6542420012² = 85606519226836160288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2090003 + ... + 2093130.

It is an arithmetic number, because the mean of its divisors is an integer number (527074884).

Almost surely, 2^6542420012 is an apocalyptic number.

It is an amenable number.

6542420012 is a deficient number, since it is larger than the sum of its proper divisors (6107377204).

6542420012 is a wasteful number, since it uses less digits than its factorization.

6542420012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183177 (or 4183175 counting only the distinct ones).

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

The square root of 6542420012 is about 80885.2274027835. The cubic root of 6542420012 is about 1870.3066034296.

Adding to 6542420012 its reverse (2100242456), we get a palindrome (8642662468).

The spelling of 6542420012 in words is "six billion, five hundred forty-two million, four hundred twenty thousand, twelve".