1239456 has 24 divisors (see below), whose sum is σ = 3253824. Its totient is φ = 413120.

The previous prime is 1239449. The next prime is 1239457. The reversal of 1239456 is 6549321.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6360 + ... + 6551.

It is an arithmetic number, because the mean of its divisors is an integer number (135576).

2^1239456 is an apocalyptic number.

1239456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1239456 is an abundant number, since it is smaller than the sum of its proper divisors (2014368).

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

1239456 is a wasteful number, since it uses less digits than its factorization.

1239456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12924 (or 12916 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 1239456 is about 1113.3085825592. The cubic root of 1239456 is about 107.4179940652.

The spelling of 1239456 in words is "one million, two hundred thirty-nine thousand, four hundred fifty-six".