1209072 has 20 divisors (see below), whose sum is σ = 3123560. Its totient is φ = 403008.

The previous prime is 1209053. The next prime is 1209073. The reversal of 1209072 is 2709021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209073) 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, 12547 + ... + 12642.

It is an arithmetic number, because the mean of its divisors is an integer number (156178).

2^1209072 is an apocalyptic number.

1209072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1209072 is an abundant number, since it is smaller than the sum of its proper divisors (1914488).

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

1209072 is a wasteful number, since it uses less digits than its factorization.

1209072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25200 (or 25194 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1209072 is about 1099.5781009096. The cubic root of 1209072 is about 106.5329748671.

The spelling of 1209072 in words is "one million, two hundred nine thousand, seventy-two".