6427421278 has 8 divisors (see below), whose sum is σ = 9641502072. Its totient is φ = 3213587256.

The previous prime is 6427421269. The next prime is 6427421281. The reversal of 6427421278 is 8721247246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31701 + ... + 117727.

It is an arithmetic number, because the mean of its divisors is an integer number (1205187759).

Almost surely, 2^6427421278 is an apocalyptic number.

6427421278 is a deficient number, since it is larger than the sum of its proper divisors (3214080794).

6427421278 is a wasteful number, since it uses less digits than its factorization.

6427421278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123386.

The product of its digits is 301056, while the sum is 43.

The square root of 6427421278 is about 80171.1998039196. The cubic root of 6427421278 is about 1859.2833866000.

The spelling of 6427421278 in words is "six billion, four hundred twenty-seven million, four hundred twenty-one thousand, two hundred seventy-eight".