127821140 has 48 divisors (see below), whose sum is σ = 275184000. Its totient is φ = 49855872.

The previous prime is 127821103. The next prime is 127821173. The reversal of 127821140 is 41128721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175457 + ... + 176183.

It is an arithmetic number, because the mean of its divisors is an integer number (5733000).

Almost surely, 2^127821140 is an apocalyptic number.

127821140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127821140 is an abundant number, since it is smaller than the sum of its proper divisors (147362860).

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

127821140 is a wasteful number, since it uses less digits than its factorization.

127821140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 127821140 is about 11305.8011657733. The cubic root of 127821140 is about 503.7335714953.

Adding to 127821140 its reverse (41128721), we get a palindrome (168949861).

The spelling of 127821140 in words is "one hundred twenty-seven million, eight hundred twenty-one thousand, one hundred forty".