254122109 has 2 divisors, whose sum is σ = 254122110. Its totient is φ = 254122108.

The previous prime is 254122079. The next prime is 254122117. The reversal of 254122109 is 901221452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253128100 + 994009 = 15910^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 254122109 - 2⁸ = 254121853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254122129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127061054 + 127061055.

It is an arithmetic number, because the mean of its divisors is an integer number (127061055).

Almost surely, 2^254122109 is an apocalyptic number.

It is an amenable number.

254122109 is a deficient number, since it is larger than the sum of its proper divisors (1).

254122109 is an equidigital number, since it uses as much as digits as its factorization.

254122109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 254122109 is about 15941.2078902447. The cubic root of 254122109 is about 633.4040223653.

The spelling of 254122109 in words is "two hundred fifty-four million, one hundred twenty-two thousand, one hundred nine".