1254109 has 2 divisors, whose sum is σ = 1254110. Its totient is φ = 1254108.

The previous prime is 1254091. The next prime is 1254119. The reversal of 1254109 is 9014521.

Together with previous prime (1254091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994009 + 260100 = 997^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254109 - 2¹³ = 1245917 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1254109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627054 + 627055.

It is an arithmetic number, because the mean of its divisors is an integer number (627055).

2^1254109 is an apocalyptic number.

It is an amenable number.

1254109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254109 is an equidigital number, since it uses as much as digits as its factorization.

1254109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1254109 is about 1119.8700817506. The cubic root of 1254109 is about 107.8396396984.

The spelling of 1254109 in words is "one million, two hundred fifty-four thousand, one hundred nine".