1276125120 has 168 divisors, whose sum is σ = 4620554640. Its totient is φ = 322375680.

The previous prime is 1276125119. The next prime is 1276125143. The reversal of 1276125120 is 215216721.

1276125120 is a `hidden beast` number, since 1 + 27 + 612 + 5 + 1 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43060 + ... + 66380.

Almost surely, 2^1276125120 is an apocalyptic number.

1276125120 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 1276125120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2310277320).

1276125120 is an abundant number, since it is smaller than the sum of its proper divisors (3344429520).

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

1276125120 is a wasteful number, since it uses less digits than its factorization.

1276125120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23363 (or 23350 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1276125120 is about 35722.8934998273. The cubic root of 1276125120 is about 1084.6703097628.

The spelling of 1276125120 in words is "one billion, two hundred seventy-six million, one hundred twenty-five thousand, one hundred twenty".