127240321240 has 32 divisors (see below), whose sum is σ = 298738147680. Its totient is φ = 48683252992.

The previous prime is 127240321213. The next prime is 127240321279. The reversal of 127240321240 is 42123042721.

It is a junction number, because it is equal to n+sod(n) for n = 127240321199 and 127240321208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69151429 + ... + 69153268.

It is an arithmetic number, because the mean of its divisors is an integer number (9335567115).

Almost surely, 2^127240321240 is an apocalyptic number.

127240321240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127240321240 is an abundant number, since it is smaller than the sum of its proper divisors (171497826440).

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

127240321240 is a wasteful number, since it uses less digits than its factorization.

127240321240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138304731 (or 138304727 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 127240321240 its reverse (42123042721), we get a palindrome (169363363961).

The spelling of 127240321240 in words is "one hundred twenty-seven billion, two hundred forty million, three hundred twenty-one thousand, two hundred forty".