127420669 has 4 divisors (see below), whose sum is σ = 134127040. Its totient is φ = 120714300.

The previous prime is 127420651. The next prime is 127420679. The reversal of 127420669 is 966024721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 966024721 = 769 ⋅1256209.

It is a cyclic number.

It is not a de Polignac number, because 127420669 - 2⁷ = 127420541 is a prime.

It is a super-2 number, since 2×127420669² = 32472053776815122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127420609) 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, 3353157 + ... + 3353194.

It is an arithmetic number, because the mean of its divisors is an integer number (33531760).

Almost surely, 2^127420669 is an apocalyptic number.

127420669 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

127420669 is a deficient number, since it is larger than the sum of its proper divisors (6706371).

127420669 is an equidigital number, since it uses as much as digits as its factorization.

127420669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706370.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 127420669 is about 11288.0764083169. The cubic root of 127420669 is about 503.2069456896.

The spelling of 127420669 in words is "one hundred twenty-seven million, four hundred twenty thousand, six hundred sixty-nine".