127491841 has 2 divisors, whose sum is σ = 127491842. Its totient is φ = 127491840.

The previous prime is 127491817. The next prime is 127491863. The reversal of 127491841 is 148194721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86583025 + 40908816 = 9305^2 + 6396^2 .

It is an emirp because it is prime and its reverse (148194721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127491841 - 2⁷ = 127491713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127491841.

It is not a weakly prime, because it can be changed into another prime (127491941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63745920 + 63745921.

It is an arithmetic number, because the mean of its divisors is an integer number (63745921).

Almost surely, 2^127491841 is an apocalyptic number.

It is an amenable number.

127491841 is a deficient number, since it is larger than the sum of its proper divisors (1).

127491841 is an equidigital number, since it uses as much as digits as its factorization.

127491841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 37.

The square root of 127491841 is about 11291.2284982636. The cubic root of 127491841 is about 503.3006185580.

The spelling of 127491841 in words is "one hundred twenty-seven million, four hundred ninety-one thousand, eight hundred forty-one".