127285457 has 4 divisors (see below), whose sum is σ = 137076660. Its totient is φ = 117494256.

The previous prime is 127285453. The next prime is 127285469. The reversal of 127285457 is 754582721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54626881 + 72658576 = 7391^2 + 8524^2 .

It is a cyclic number.

It is not a de Polignac number, because 127285457 - 2² = 127285453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127285451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4895582 + ... + 4895607.

It is an arithmetic number, because the mean of its divisors is an integer number (34269165).

Almost surely, 2^127285457 is an apocalyptic number.

It is an amenable number.

127285457 is a deficient number, since it is larger than the sum of its proper divisors (9791203).

127285457 is an equidigital number, since it uses as much as digits as its factorization.

127285457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9791202.

The product of its digits is 156800, while the sum is 41.

The square root of 127285457 is about 11282.0856671096. The cubic root of 127285457 is about 503.0288905934.

The spelling of 127285457 in words is "one hundred twenty-seven million, two hundred eighty-five thousand, four hundred fifty-seven".