6381540242 has 48 divisors (see below), whose sum is σ = 12064381056. Its totient is φ = 2478115200.

The previous prime is 6381540229. The next prime is 6381540283. The reversal of 6381540242 is 2420451836.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520778 + ... + 532890.

It is an arithmetic number, because the mean of its divisors is an integer number (251341272).

Almost surely, 2^6381540242 is an apocalyptic number.

6381540242 is a deficient number, since it is larger than the sum of its proper divisors (5682840814).

6381540242 is a wasteful number, since it uses less digits than its factorization.

6381540242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12455 (or 12444 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 6381540242 is about 79884.5431982934. The cubic root of 6381540242 is about 1854.8487601526.

The spelling of 6381540242 in words is "six billion, three hundred eighty-one million, five hundred forty thousand, two hundred forty-two".