1275802116 has 12 divisors (see below), whose sum is σ = 2976871632. Its totient is φ = 425267368.

The previous prime is 1275802091. The next prime is 1275802123. The reversal of 1275802116 is 6112085721.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53158410 + ... + 53158433.

It is an arithmetic number, because the mean of its divisors is an integer number (248072636).

Almost surely, 2^1275802116 is an apocalyptic number.

It is an amenable number.

1275802116 is an abundant number, since it is smaller than the sum of its proper divisors (1701069516).

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

1275802116 is a wasteful number, since it uses less digits than its factorization.

1275802116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106316850 (or 106316848 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1275802116 is about 35718.3722473463. The cubic root of 1275802116 is about 1084.5787872814.

Adding to 1275802116 its reverse (6112085721), we get a palindrome (7387887837).

The spelling of 1275802116 in words is "one billion, two hundred seventy-five million, eight hundred two thousand, one hundred sixteen".