127929540 has 48 divisors (see below), whose sum is σ = 359085888. Its totient is φ = 34030464.

The previous prime is 127929509. The next prime is 127929541. The reversal of 127929540 is 45929721.

It is a super-2 number, since 2×127929540² = 32731934409223200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (127929541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24174 + ... + 28986.

It is an arithmetic number, because the mean of its divisors is an integer number (7480956).

Almost surely, 2^127929540 is an apocalyptic number.

127929540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127929540 is an abundant number, since it is smaller than the sum of its proper divisors (231156348).

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

127929540 is a wasteful number, since it uses less digits than its factorization.

127929540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268 (or 5266 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 127929540 is about 11310.5941488500. The cubic root of 127929540 is about 503.8759300295.

The spelling of 127929540 in words is "one hundred twenty-seven million, nine hundred twenty-nine thousand, five hundred forty".