127973091 has 8 divisors (see below), whose sum is σ = 170931904. Its totient is φ = 85164840.

The previous prime is 127973051. The next prime is 127973099. The reversal of 127973091 is 190379721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 127973091 - 2¹⁰ = 127972067 is a prime.

It is a super-2 number, since 2×127973091² = 32754224040188562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127973099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35641 + ... + 39066.

It is an arithmetic number, because the mean of its divisors is an integer number (21366488).

Almost surely, 2^127973091 is an apocalyptic number.

127973091 is a deficient number, since it is larger than the sum of its proper divisors (42958813).

127973091 is an equidigital number, since it uses as much as digits as its factorization.

127973091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75281.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 127973091 is about 11312.5192154533. The cubic root of 127973091 is about 503.9331016334.

The spelling of 127973091 in words is "one hundred twenty-seven million, nine hundred seventy-three thousand, ninety-one".