127420741815 has 32 divisors (see below), whose sum is σ = 206519335680. Its totient is φ = 67079384064.

The previous prime is 127420741813. The next prime is 127420741823. The reversal of 127420741815 is 518147024721.

It is a happy number.

It is not a de Polignac number, because 127420741815 - 2¹ = 127420741813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127420741813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435912 + ... + 666978.

It is an arithmetic number, because the mean of its divisors is an integer number (6453729240).

Almost surely, 2^127420741815 is an apocalyptic number.

127420741815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

127420741815 is a deficient number, since it is larger than the sum of its proper divisors (79098593865).

127420741815 is a wasteful number, since it uses less digits than its factorization.

127420741815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231551.

The product of its (nonzero) digits is 125440, while the sum is 42.

The spelling of 127420741815 in words is "one hundred twenty-seven billion, four hundred twenty million, seven hundred forty-one thousand, eight hundred fifteen".