1267976442 has 16 divisors (see below), whose sum is σ = 2539097280. Its totient is φ = 422134752.

The previous prime is 1267976417. The next prime is 1267976473. The reversal of 1267976442 is 2446797621.

It is a junction number, because it is equal to n+sod(n) for n = 1267976391 and 1267976400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125758 + ... + 135465.

It is an arithmetic number, because the mean of its divisors is an integer number (158693580).

Almost surely, 2^1267976442 is an apocalyptic number.

1267976442 is an abundant number, since it is smaller than the sum of its proper divisors (1271120838).

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

1267976442 is a wasteful number, since it uses less digits than its factorization.

1267976442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262037.

The product of its digits is 1016064, while the sum is 48.

The square root of 1267976442 is about 35608.6568407178. The cubic root of 1267976442 is about 1082.3566627820.

The spelling of 1267976442 in words is "one billion, two hundred sixty-seven million, nine hundred seventy-six thousand, four hundred forty-two".