1245441 has 4 divisors (see below), whose sum is σ = 1660592. Its totient is φ = 830292.

The previous prime is 1245421. The next prime is 1245449. The reversal of 1245441 is 1445421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1445421 = 3 ⋅481807.

It is not a de Polignac number, because 1245441 - 2¹¹ = 1243393 is a prime.

It is a super-2 number, since 2×1245441² = 3102246568962, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207571 + ... + 207576.

It is an arithmetic number, because the mean of its divisors is an integer number (415148).

2^1245441 is an apocalyptic number.

It is an amenable number.

1245441 is a deficient number, since it is larger than the sum of its proper divisors (415151).

1245441 is an equidigital number, since it uses as much as digits as its factorization.

1245441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415150.

The product of its digits is 640, while the sum is 21.

The square root of 1245441 is about 1115.9932795497. The cubic root of 1245441 is about 107.5906140613.

It can be divided in two parts, 124 and 5441, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 1245441 in words is "one million, two hundred forty-five thousand, four hundred forty-one".