1267201546 has 12 divisors (see below), whose sum is σ = 2058265782. Its totient is φ = 584862096.

The previous prime is 1267201541. The next prime is 1267201547. The reversal of 1267201546 is 6451027621.

It can be written as a sum of positive squares in 3 ways, for example, as 900900225 + 366301321 = 30015^2 + 19139^2 .

It is not an unprimeable number, because it can be changed into a prime (1267201541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1874221 + ... + 1874896.

Almost surely, 2^1267201546 is an apocalyptic number.

1267201546 is a deficient number, since it is larger than the sum of its proper divisors (791064236).

1267201546 is a wasteful number, since it uses less digits than its factorization.

1267201546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749145 (or 3749132 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1267201546 is about 35597.7744529065. The cubic root of 1267201546 is about 1082.1361316710.

The spelling of 1267201546 in words is "one billion, two hundred sixty-seven million, two hundred one thousand, five hundred forty-six".