127243020 has 96 divisors (see below), whose sum is σ = 368121600. Its totient is φ = 32820480.

The previous prime is 127242991. The next prime is 127243027. The reversal of 127243020 is 20342721.

It is a super-2 number, since 2×127243020² = 32381572277440800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127243027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384255 + ... + 384585.

It is an arithmetic number, because the mean of its divisors is an integer number (3834600).

Almost surely, 2^127243020 is an apocalyptic number.

127243020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127243020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184060800).

127243020 is an abundant number, since it is smaller than the sum of its proper divisors (240878580).

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

127243020 is a wasteful number, since it uses less digits than its factorization.

127243020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 127243020 is about 11280.2047853751. The cubic root of 127243020 is about 502.9729810645.

Adding to 127243020 its reverse (20342721), we get a palindrome (147585741).

The spelling of 127243020 in words is "one hundred twenty-seven million, two hundred forty-three thousand, twenty".