1275969442 has 48 divisors (see below), whose sum is σ = 2275257600. Its totient is φ = 534174080.

The previous prime is 1275969419. The next prime is 1275969449. The reversal of 1275969442 is 2449695721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1275969449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190059 + ... + 196657.

It is an arithmetic number, because the mean of its divisors is an integer number (47401200).

Almost surely, 2^1275969442 is an apocalyptic number.

1275969442 is a deficient number, since it is larger than the sum of its proper divisors (999288158).

1275969442 is a wasteful number, since it uses less digits than its factorization.

1275969442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687 (or 6676 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 1275969442 is about 35720.7144665389. The cubic root of 1275969442 is about 1084.6262006680.

The spelling of 1275969442 in words is "one billion, two hundred seventy-five million, nine hundred sixty-nine thousand, four hundred forty-two".