1239072 has 24 divisors (see below), whose sum is σ = 3252816. Its totient is φ = 412992.

The previous prime is 1239067. The next prime is 1239089. The reversal of 1239072 is 2709321.

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

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6358 + ... + 6549.

It is an arithmetic number, because the mean of its divisors is an integer number (135534).

2^1239072 is an apocalyptic number.

1239072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1239072 is an abundant number, since it is smaller than the sum of its proper divisors (2013744).

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

1239072 is a wasteful number, since it uses less digits than its factorization.

1239072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12920 (or 12912 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1239072 is about 1113.1361102758. The cubic root of 1239072 is about 107.4068997436.

It can be divided in two parts, 12 and 39072, that multiplied together give a palindrome (468864).

The spelling of 1239072 in words is "one million, two hundred thirty-nine thousand, seventy-two".