1267134245740 has 48 divisors (see below), whose sum is σ = 2913220072224. Its totient is φ = 459136294400.

The previous prime is 1267134245737. The next prime is 1267134245749. The reversal of 1267134245740 is 475424317621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1267134245749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10186759 + ... + 10310398.

It is an arithmetic number, because the mean of its divisors is an integer number (60692084838).

Almost surely, 2^{1267134245740} is an apocalyptic number.

1267134245740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1267134245740 is an abundant number, since it is smaller than the sum of its proper divisors (1646085826484).

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

1267134245740 is a wasteful number, since it uses less digits than its factorization.

1267134245740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20497458 (or 20497456 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 1267134245740 in words is "one trillion, two hundred sixty-seven billion, one hundred thirty-four million, two hundred forty-five thousand, seven hundred forty".