1254145 has 4 divisors (see below), whose sum is σ = 1504980. Its totient is φ = 1003312.

The previous prime is 1254137. The next prime is 1254151. The reversal of 1254145 is 5414521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 588289 + 665856 = 767^2 + 816^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254145 - 2³ = 1254137 is a prime.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125410 + ... + 125419.

It is an arithmetic number, because the mean of its divisors is an integer number (376245).

2^1254145 is an apocalyptic number.

It is an amenable number.

1254145 is a deficient number, since it is larger than the sum of its proper divisors (250835).

1254145 is an equidigital number, since it uses as much as digits as its factorization.

1254145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250834.

The product of its digits is 800, while the sum is 22.

The square root of 1254145 is about 1119.8861549283. The cubic root of 1254145 is about 107.8406715571.

Adding to 1254145 its reverse (5414521), we get a palindrome (6668666).

The spelling of 1254145 in words is "one million, two hundred fifty-four thousand, one hundred forty-five".