6542405102 has 4 divisors (see below), whose sum is σ = 9813607656. Its totient is φ = 3271202550.

The previous prime is 6542405101. The next prime is 6542405117. The reversal of 6542405102 is 2015042456.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542405101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635601274 + ... + 1635601277.

It is an arithmetic number, because the mean of its divisors is an integer number (2453401914).

Almost surely, 2^6542405102 is an apocalyptic number.

6542405102 is a deficient number, since it is larger than the sum of its proper divisors (3271202554).

6542405102 is a wasteful number, since it uses less digits than its factorization.

6542405102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271202553.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 6542405102 is about 80885.1352350974. The cubic root of 6542405102 is about 1870.3051826357.

Adding to 6542405102 its reverse (2015042456), we get a palindrome (8557447558).

The spelling of 6542405102 in words is "six billion, five hundred forty-two million, four hundred five thousand, one hundred two".