274143 has 4 divisors (see below), whose sum is σ = 365528. Its totient is φ = 182760.

The previous prime is 274139. The next prime is 274147. The reversal of 274143 is 341472.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (274139) and next prime (274147).

It is not a de Polignac number, because 274143 - 2² = 274139 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

274143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274147) 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, 45688 + ... + 45693.

It is an arithmetic number, because the mean of its divisors is an integer number (91382).

2²⁷⁴¹⁴³ is an apocalyptic number.

274143 is a deficient number, since it is larger than the sum of its proper divisors (91385).

274143 is an equidigital number, since it uses as much as digits as its factorization.

274143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91384.

The product of its digits is 672, while the sum is 21.

The square root of 274143 is about 523.5866690434. The cubic root of 274143 is about 64.9619501172.

The spelling of 274143 in words is "two hundred seventy-four thousand, one hundred forty-three", and thus it is an iban number.