1267126587 has 48 divisors (see below), whose sum is σ = 1969477120. Its totient is φ = 782654400.

The previous prime is 1267126577. The next prime is 1267126613. The reversal of 1267126587 is 7856217621.

1267126587 is a `hidden beast` number, since 1 + 2 + 67 + 1 + 2 + 6 + 587 = 666.

1267126587 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1267126587 - 2⁴ = 1267126571 is a prime.

It is a Duffinian number.

Its product of digits (282240) is a multiple of the sum of its prime factors (784).

It is not an unprimeable number, because it can be changed into a prime (1267126547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3452478 + ... + 3452844.

Almost surely, 2^1267126587 is an apocalyptic number.

1267126587 is a deficient number, since it is larger than the sum of its proper divisors (702350533).

1267126587 is a wasteful number, since it uses less digits than its factorization.

1267126587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 781 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 1267126587 is about 35596.7215765722. The cubic root of 1267126587 is about 1082.1147939861.

The spelling of 1267126587 in words is "one billion, two hundred sixty-seven million, one hundred twenty-six thousand, five hundred eighty-seven".