127117540 has 24 divisors (see below), whose sum is σ = 291215232. Its totient is φ = 46224480.

The previous prime is 127117519. The next prime is 127117541. The reversal of 127117540 is 45711721.

It is a junction number, because it is equal to n+sod(n) for n = 127117499 and 127117508.

It is not an unprimeable number, because it can be changed into a prime (127117541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288684 + ... + 289123.

It is an arithmetic number, because the mean of its divisors is an integer number (12133968).

Almost surely, 2^127117540 is an apocalyptic number.

127117540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127117540 is an abundant number, since it is smaller than the sum of its proper divisors (164097692).

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

127117540 is a wasteful number, since it uses less digits than its factorization.

127117540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577827 (or 577825 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 127117540 is about 11274.6414577139. The cubic root of 127117540 is about 502.8075920128.

It can be divided in two parts, 1271175 and 40, that added together give a triangular number (1271215 = T₁₅₉₄).

The spelling of 127117540 in words is "one hundred twenty-seven million, one hundred seventeen thousand, five hundred forty".