1278060120 has 160 divisors (see below), whose sum is σ = 4310349120. Its totient is φ = 339655680.

The previous prime is 1278060097. The next prime is 1278060139. The reversal of 1278060120 is 210608721.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1402465 + ... + 1403375.

It is an arithmetic number, because the mean of its divisors is an integer number (26939682).

Almost surely, 2^1278060120 is an apocalyptic number.

1278060120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1278060120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2155174560).

1278060120 is an abundant number, since it is smaller than the sum of its proper divisors (3032289000).

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

1278060120 is a wasteful number, since it uses less digits than its factorization.

1278060120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1278060120 is about 35749.9667132712. The cubic root of 1278060120 is about 1085.2182646827.

Adding to 1278060120 its reverse (210608721), we get a palindrome (1488668841).

It can be divided in two parts, 12780 and 60120, that added together give a square (72900 = 270²).

The spelling of 1278060120 in words is "one billion, two hundred seventy-eight million, sixty thousand, one hundred twenty".