1278342162 has 40 divisors (see below), whose sum is σ = 2988982656. Its totient is φ = 407586168.

The previous prime is 1278342113. The next prime is 1278342223. The reversal of 1278342162 is 2612438721.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 167818 + ... + 175269.

Almost surely, 2^1278342162 is an apocalyptic number.

1278342162 is an abundant number, since it is smaller than the sum of its proper divisors (1710640494).

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

1278342162 is a wasteful number, since it uses less digits than its factorization.

1278342162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343124 (or 343115 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1278342162 is about 35753.9111426988. The cubic root of 1278342162 is about 1085.2980873798.

It can be divided in two parts, 12783 and 42162, that added together give a palindrome (54945).

The spelling of 1278342162 in words is "one billion, two hundred seventy-eight million, three hundred forty-two thousand, one hundred sixty-two".