1267055438 has 16 divisors (see below), whose sum is σ = 2084952960. Its totient is φ = 572715000.

The previous prime is 1267055437. The next prime is 1267055453. The reversal of 1267055438 is 8345507621.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1267055395 and 1267055404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267055437) by changing a digit.

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, 156938 + ... + 164813.

It is an arithmetic number, because the mean of its divisors is an integer number (130309560).

Almost surely, 2^1267055438 is an apocalyptic number.

1267055438 is a deficient number, since it is larger than the sum of its proper divisors (817897522).

1267055438 is a wasteful number, since it uses less digits than its factorization.

1267055438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321943.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 1267055438 is about 35595.7221868022. The cubic root of 1267055438 is about 1082.0945400701.

The spelling of 1267055438 in words is "one billion, two hundred sixty-seven million, fifty-five thousand, four hundred thirty-eight".