1245854 has 4 divisors (see below), whose sum is σ = 1868784. Its totient is φ = 622926.

The previous prime is 1245847. The next prime is 1245863. The reversal of 1245854 is 4585421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4585421 = 59 ⋅77719.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311462 + ... + 311465.

It is an arithmetic number, because the mean of its divisors is an integer number (467196).

2^1245854 is an apocalyptic number.

1245854 is a deficient number, since it is larger than the sum of its proper divisors (622930).

1245854 is an equidigital number, since it uses as much as digits as its factorization.

1245854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622929.

The product of its digits is 6400, while the sum is 29.

The square root of 1245854 is about 1116.1783011688. The cubic root of 1245854 is about 107.6025054350.

The spelling of 1245854 in words is "one million, two hundred forty-five thousand, eight hundred fifty-four".