27121143 has 8 divisors (see below), whose sum is σ = 41327488. Its totient is φ = 15497784.

The previous prime is 27121141. The next prime is 27121153. The reversal of 27121143 is 34112172.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27121143 - 2¹ = 27121141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1291483 = 27121143 / (2 + 7 + 1 + 2 + 1 + 1 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27121141) 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, 645721 + ... + 645762.

It is an arithmetic number, because the mean of its divisors is an integer number (5165936).

Almost surely, 2^27121143 is an apocalyptic number.

27121143 is a deficient number, since it is larger than the sum of its proper divisors (14206345).

27121143 is a wasteful number, since it uses less digits than its factorization.

27121143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291493.

The product of its digits is 336, while the sum is 21.

The square root of 27121143 is about 5207.7963669867. The cubic root of 27121143 is about 300.4480084063.

The spelling of 27121143 in words is "twenty-seven million, one hundred twenty-one thousand, one hundred forty-three".