1276115942400 has 528 divisors, whose sum is σ = 4688694571008. Its totient is φ = 303980544000.

The previous prime is 1276115942359. The next prime is 1276115942461. The reversal of 1276115942400 is 42495116721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30929785 + ... + 30971015.

Almost surely, 2^{1276115942400} is an apocalyptic number.

1276115942400 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 1276115942400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2344347285504).

1276115942400 is an abundant number, since it is smaller than the sum of its proper divisors (3412578628608).

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

1276115942400 is a wasteful number, since it uses less digits than its factorization.

1276115942400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41308 (or 41285 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 1276115942400 in words is "one trillion, two hundred seventy-six billion, one hundred fifteen million, nine hundred forty-two thousand, four hundred".