1279422016 has 28 divisors (see below), whose sum is σ = 2551765788. Its totient is φ = 636457472.

The previous prime is 1279422007. The next prime is 1279422061. The reversal of 1279422016 is 6102249721.

It can be written as a sum of positive squares in 2 ways, for example, as 979439616 + 299982400 = 31296^2 + 17320^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38131 + ... + 63346.

Almost surely, 2^1279422016 is an apocalyptic number.

1279422016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1279422016 is a deficient number, since it is larger than the sum of its proper divisors (1272343772).

1279422016 is a wasteful number, since it uses less digits than its factorization.

1279422016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101686 (or 101676 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1279422016 is about 35769.0091559719. The cubic root of 1279422016 is about 1085.6035959968.

The spelling of 1279422016 in words is "one billion, two hundred seventy-nine million, four hundred twenty-two thousand, sixteen".