27942140 has 12 divisors (see below), whose sum is σ = 58678536. Its totient is φ = 11176848.

The previous prime is 27942139. The next prime is 27942143. The reversal of 27942140 is 4124972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27942143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698534 + ... + 698573.

It is an arithmetic number, because the mean of its divisors is an integer number (4889878).

Almost surely, 2^27942140 is an apocalyptic number.

27942140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27942140 is an abundant number, since it is smaller than the sum of its proper divisors (30736396).

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

27942140 is a wasteful number, since it uses less digits than its factorization.

27942140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397116 (or 1397114 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 27942140 is about 5286.0325386815. The cubic root of 27942140 is about 303.4495898080.

It can be divided in two parts, 27942 and 140, that added together give a palindrome (28082).

The spelling of 27942140 in words is "twenty-seven million, nine hundred forty-two thousand, one hundred forty".