1254643 has 8 divisors (see below), whose sum is σ = 1365728. Its totient is φ = 1145664.

The previous prime is 1254637. The next prime is 1254647. The reversal of 1254643 is 3464521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1254643 - 2⁹ = 1254131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254647) 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 in 7 ways as a sum of consecutive naturals, for example, 871 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (170716).

2^1254643 is an apocalyptic number.

1254643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1254643 is a deficient number, since it is larger than the sum of its proper divisors (111085).

1254643 is a wasteful number, since it uses less digits than its factorization.

1254643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053.

The product of its digits is 2880, while the sum is 25.

The square root of 1254643 is about 1120.1084768896. The cubic root of 1254643 is about 107.8549435771.

The spelling of 1254643 in words is "one million, two hundred fifty-four thousand, six hundred forty-three".