1421041278 has 8 divisors (see below), whose sum is σ = 2842082568. Its totient is φ = 473680424.

The previous prime is 1421041211. The next prime is 1421041283. The reversal of 1421041278 is 8721401241.

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

1421041278 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118420101 + ... + 118420112.

It is an arithmetic number, because the mean of its divisors is an integer number (355260321).

Almost surely, 2^1421041278 is an apocalyptic number.

1421041278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421041278 is a wasteful number, since it uses less digits than its factorization.

1421041278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236840218.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 1421041278 is about 37696.7011554062. The cubic root of 1421041278 is about 1124.2655362097.

The spelling of 1421041278 in words is "one billion, four hundred twenty-one million, forty-one thousand, two hundred seventy-eight".