1278282242 has 16 divisors (see below), whose sum is σ = 2029674240. Its totient is φ = 602749392.

The previous prime is 1278282233. The next prime is 1278282281. The reversal of 1278282242 is 2422828721.

It is a junction number, because it is equal to n+sod(n) for n = 1278282196 and 1278282205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253778 + ... + 258765.

It is an arithmetic number, because the mean of its divisors is an integer number (126854640).

Almost surely, 2^1278282242 is an apocalyptic number.

1278282242 is a deficient number, since it is larger than the sum of its proper divisors (751391998).

1278282242 is a wasteful number, since it uses less digits than its factorization.

1278282242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512617.

The product of its digits is 57344, while the sum is 38.

The square root of 1278282242 is about 35753.0731825951. The cubic root of 1278282242 is about 1085.2811299799.

The spelling of 1278282242 in words is "one billion, two hundred seventy-eight million, two hundred eighty-two thousand, two hundred forty-two".