127198481 has 4 divisors (see below), whose sum is σ = 129283764. Its totient is φ = 125113200.

The previous prime is 127198459. The next prime is 127198493. The reversal of 127198481 is 184891721.

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 1960000 + 125238481 = 1400^2 + 11191^2 .

It is a cyclic number.

It is not a de Polignac number, because 127198481 - 2²² = 123004177 is a prime.

It is a super-2 number, since 2×127198481² = 32358907137414722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127198411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042550 + ... + 1042671.

It is an arithmetic number, because the mean of its divisors is an integer number (32320941).

Almost surely, 2^127198481 is an apocalyptic number.

It is an amenable number.

127198481 is a deficient number, since it is larger than the sum of its proper divisors (2085283).

127198481 is an equidigital number, since it uses as much as digits as its factorization.

127198481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085282.

The product of its digits is 32256, while the sum is 41.

The square root of 127198481 is about 11278.2304019735. The cubic root of 127198481 is about 502.9142888394.

The spelling of 127198481 in words is "one hundred twenty-seven million, one hundred ninety-eight thousand, four hundred eighty-one".