1279081420 has 24 divisors (see below), whose sum is σ = 2690032464. Its totient is φ = 510878016.

The previous prime is 1279081417. The next prime is 1279081439. The reversal of 1279081420 is 241809721.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33159 + ... + 60478.

It is an arithmetic number, because the mean of its divisors is an integer number (112084686).

Almost surely, 2^1279081420 is an apocalyptic number.

1279081420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1279081420 is an abundant number, since it is smaller than the sum of its proper divisors (1410951044).

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

1279081420 is a wasteful number, since it uses less digits than its factorization.

1279081420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94329 (or 94327 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1279081420 is about 35764.2477902164. The cubic root of 1279081420 is about 1085.5072543016.

The spelling of 1279081420 in words is "one billion, two hundred seventy-nine million, eighty-one thousand, four hundred twenty".