1200053409 has 16 divisors (see below), whose sum is σ = 1699335360. Its totient is φ = 750689280.

The previous prime is 1200053399. The next prime is 1200053429. The reversal of 1200053409 is 9043500021.

It is not a de Polignac number, because 1200053409 - 2¹¹ = 1200051361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200053429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18664 + ... + 52425.

It is an arithmetic number, because the mean of its divisors is an integer number (106208460).

Almost surely, 2^1200053409 is an apocalyptic number.

It is an amenable number.

1200053409 is a deficient number, since it is larger than the sum of its proper divisors (499281951).

1200053409 is a wasteful number, since it uses less digits than its factorization.

1200053409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71440.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1200053409 is about 34641.7870353133. The cubic root of 1200053409 is about 1062.6743343741.

The spelling of 1200053409 in words is "one billion, two hundred million, fifty-three thousand, four hundred nine".