6142378481 has 4 divisors (see below), whose sum is σ = 6142535232. Its totient is φ = 6142221732.

The previous prime is 6142378439. The next prime is 6142378493. The reversal of 6142378481 is 1848732416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6142378481 is a prime.

It is a super-2 number, since 2×6142378481² = 75457626807703734722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6142378181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38420 + ... + 117306.

It is an arithmetic number, because the mean of its divisors is an integer number (1535633808).

Almost surely, 2^6142378481 is an apocalyptic number.

It is an amenable number.

6142378481 is a deficient number, since it is larger than the sum of its proper divisors (156751).

6142378481 is an equidigital number, since it uses as much as digits as its factorization.

6142378481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156750.

The product of its digits is 258048, while the sum is 44.

The square root of 6142378481 is about 78373.3276121411. The cubic root of 6142378481 is about 1831.3816475288.

The spelling of 6142378481 in words is "six billion, one hundred forty-two million, three hundred seventy-eight thousand, four hundred eighty-one".