1279840054 has 8 divisors (see below), whose sum is σ = 1937702088. Its totient is φ = 633939360.

The previous prime is 1279840031. The next prime is 1279840061. The reversal of 1279840054 is 4500489721.

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

It is a junction number, because it is equal to n+sod(n) for n = 1279839989 and 1279840016.

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, 2990067 + ... + 2990494.

It is an arithmetic number, because the mean of its divisors is an integer number (242212761).

Almost surely, 2^1279840054 is an apocalyptic number.

1279840054 is a deficient number, since it is larger than the sum of its proper divisors (657862034).

1279840054 is a wasteful number, since it uses less digits than its factorization.

1279840054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980670.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1279840054 is about 35774.8522568577. The cubic root of 1279840054 is about 1085.7218197291.

The spelling of 1279840054 in words is "one billion, two hundred seventy-nine million, eight hundred forty thousand, fifty-four".