127402667223841 has 3 divisors (see below), whose sum is σ = 127402678511121. Its totient is φ = 127402655936562.

The previous prime is 127402667223827. The next prime is 127402667223859. The reversal of 127402667223841 is 148322766204721.

It is a happy number.

The square root of 127402667223841 is 11287279.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 127402667223841 - 2¹⁵ = 127402667191073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127402667623841) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5643640 + ... + 16930918.

It is an arithmetic number, because the mean of its divisors is an integer number (42467559503707).

Almost surely, 2^{127402667223841} is an apocalyptic number.

127402667223841 is the 11287279-th square number.

127402667223841 is the 5643640-th centered octagonal number.

It is an amenable number.

127402667223841 is a deficient number, since it is larger than the sum of its proper divisors (11287280).

127402667223841 is an frugal number, since it uses more digits than its factorization.

127402667223841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22574558 (or 11287279 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 127402667223841 in words is "one hundred twenty-seven trillion, four hundred two billion, six hundred sixty-seven million, two hundred twenty-three thousand, eight hundred forty-one".