127672420 has 12 divisors (see below), whose sum is σ = 268112124. Its totient is φ = 51068960.

The previous prime is 127672417. The next prime is 127672423. The reversal of 127672420 is 24276721.

It is an interprime number because it is at equal distance from previous prime (127672417) and next prime (127672423).

It can be written as a sum of positive squares in 2 ways, for example, as 89529444 + 38142976 = 9462^2 + 6176^2 .

It is not an unprimeable number, because it can be changed into a prime (127672423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3191791 + ... + 3191830.

It is an arithmetic number, because the mean of its divisors is an integer number (22342677).

Almost surely, 2^127672420 is an apocalyptic number.

127672420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127672420 is an abundant number, since it is smaller than the sum of its proper divisors (140439704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127672420 is a wasteful number, since it uses less digits than its factorization.

127672420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383630 (or 6383628 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 127672420 is about 11299.2220971180. Note that the first 3 decimals coincide. The cubic root of 127672420 is about 503.5381308710.

The spelling of 127672420 in words is "one hundred twenty-seven million, six hundred seventy-two thousand, four hundred twenty".