127121445 has 48 divisors (see below), whose sum is σ = 244026432. Its totient is φ = 60698880.

The previous prime is 127121369. The next prime is 127121447. The reversal of 127121445 is 544121721.

It is not a de Polignac number, because 127121445 - 2⁷ = 127121317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127121447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31249 + ... + 35081.

It is an arithmetic number, because the mean of its divisors is an integer number (5083884).

Almost surely, 2^127121445 is an apocalyptic number.

127121445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127121445 is a deficient number, since it is larger than the sum of its proper divisors (116904987).

127121445 is a wasteful number, since it uses less digits than its factorization.

127121445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3922 (or 3919 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 127121445 is about 11274.8146326226. The cubic root of 127121445 is about 502.8127406428.

The spelling of 127121445 in words is "one hundred twenty-seven million, one hundred twenty-one thousand, four hundred forty-five".