274945123 has 4 divisors (see below), whose sum is σ = 275258088. Its totient is φ = 274632160.

The previous prime is 274945109. The next prime is 274945127. The reversal of 274945123 is 321549472.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274945123 is a prime.

It is a super-2 number, since 2×274945123² = 151189641322970258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274945127) 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, 155161 + ... + 156922.

It is an arithmetic number, because the mean of its divisors is an integer number (68814522).

Almost surely, 2^274945123 is an apocalyptic number.

274945123 is a deficient number, since it is larger than the sum of its proper divisors (312965).

274945123 is an equidigital number, since it uses as much as digits as its factorization.

274945123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312964.

The product of its digits is 60480, while the sum is 37.

The square root of 274945123 is about 16581.4692654179. The cubic root of 274945123 is about 650.2524644530.

The spelling of 274945123 in words is "two hundred seventy-four million, nine hundred forty-five thousand, one hundred twenty-three".