1245444 has 12 divisors (see below), whose sum is σ = 2906064. Its totient is φ = 415144.

The previous prime is 1245421. The next prime is 1245449. The reversal of 1245444 is 4445421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1245444² = 3102261514272, which contains 22 as substring.

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, 51882 + ... + 51905.

It is an arithmetic number, because the mean of its divisors is an integer number (242172).

2^1245444 is an apocalyptic number.

It is an amenable number.

1245444 is an abundant number, since it is smaller than the sum of its proper divisors (1660620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245444 is a wasteful number, since it uses less digits than its factorization.

1245444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103794 (or 103792 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 1245444 is about 1115.9946236430. The cubic root of 1245444 is about 107.5907004488.

The spelling of 1245444 in words is "one million, two hundred forty-five thousand, four hundred forty-four".