127919930 has 16 divisors (see below), whose sum is σ = 230397480. Its totient is φ = 51136512.

The previous prime is 127919929. The next prime is 127919933. The reversal of 127919930 is 39919721.

It can be written as a sum of positive squares in 4 ways, for example, as 80874049 + 47045881 = 8993^2 + 6859^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (127919933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20186 + ... + 25754.

Almost surely, 2^127919930 is an apocalyptic number.

127919930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127919930 is a deficient number, since it is larger than the sum of its proper divisors (102477550).

127919930 is a wasteful number, since it uses less digits than its factorization.

127919930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7873.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 127919930 is about 11310.1693179192. The cubic root of 127919930 is about 503.8633127483.

The spelling of 127919930 in words is "one hundred twenty-seven million, nine hundred nineteen thousand, nine hundred thirty".