127345891 has 4 divisors (see below), whose sum is σ = 127495000. Its totient is φ = 127196784.

The previous prime is 127345879. The next prime is 127345903. The reversal of 127345891 is 198543721.

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

It is an interprime number because it is at equal distance from previous prime (127345879) and next prime (127345903).

It is a cyclic number.

It is not a de Polignac number, because 127345891 - 2⁵ = 127345859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127345291) 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, 73266 + ... + 74983.

It is an arithmetic number, because the mean of its divisors is an integer number (31873750).

Almost surely, 2^127345891 is an apocalyptic number.

127345891 is a deficient number, since it is larger than the sum of its proper divisors (149109).

127345891 is an equidigital number, since it uses as much as digits as its factorization.

127345891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149108.

The product of its digits is 60480, while the sum is 40.

The square root of 127345891 is about 11284.7636661119. The cubic root of 127345891 is about 503.1084892078.

The spelling of 127345891 in words is "one hundred twenty-seven million, three hundred forty-five thousand, eight hundred ninety-one".