127240 has 16 divisors (see below), whose sum is σ = 286380. Its totient is φ = 50880.

The previous prime is 127219. The next prime is 127241. The reversal of 127240 is 42721.

127240 = 85² + 86² + ... + 99².

It can be written as a sum of positive squares in 2 ways, for example, as 114244 + 12996 = 338^2 + 114^2 .

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (127241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551 + ... + 1630.

2¹²⁷²⁴⁰ is an apocalyptic number.

127240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127240 is an abundant number, since it is smaller than the sum of its proper divisors (159140).

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

127240 is a wasteful number, since it uses less digits than its factorization.

127240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192 (or 3188 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 127240 is about 356.7071628101. The cubic root of 127240 is about 50.2969001827.

Adding to 127240 its reverse (42721), we get a palindrome (169961).

The spelling of 127240 in words is "one hundred twenty-seven thousand, two hundred forty", and thus it is an iban number.