1278349122 has 32 divisors (see below), whose sum is σ = 2586018240. Its totient is φ = 421243200.

The previous prime is 1278349117. The next prime is 1278349133. The reversal of 1278349122 is 2219438721.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533904 + ... + 536292.

It is an arithmetic number, because the mean of its divisors is an integer number (80813070).

Almost surely, 2^1278349122 is an apocalyptic number.

1278349122 is an abundant number, since it is smaller than the sum of its proper divisors (1307669118).

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

1278349122 is a wasteful number, since it uses less digits than its factorization.

1278349122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378.

The product of its digits is 48384, while the sum is 39.

The square root of 1278349122 is about 35754.0084745753. The cubic root of 1278349122 is about 1085.3000570300.

The spelling of 1278349122 in words is "one billion, two hundred seventy-eight million, three hundred forty-nine thousand, one hundred twenty-two".