1405244 has 6 divisors (see below), whose sum is σ = 2459184. Its totient is φ = 702620.

The previous prime is 1405241. The next prime is 1405247. The reversal of 1405244 is 4425041.

It is an interprime number because it is at equal distance from previous prime (1405241) and next prime (1405247).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405241) 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 as a sum of consecutive naturals, namely, 175652 + ... + 175659.

It is an arithmetic number, because the mean of its divisors is an integer number (409864).

2^1405244 is an apocalyptic number.

It is an amenable number.

1405244 is a deficient number, since it is larger than the sum of its proper divisors (1053940).

1405244 is a wasteful number, since it uses less digits than its factorization.

1405244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351315 (or 351313 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1405244 is about 1185.4298798326. The cubic root of 1405244 is about 112.0083964794.

The spelling of 1405244 in words is "one million, four hundred five thousand, two hundred forty-four".