1200424405 has 8 divisors (see below), whose sum is σ = 1490182200. Its totient is φ = 927224256.

The previous prime is 1200424403. The next prime is 1200424409. The reversal of 1200424405 is 5044240021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 111028369 + 1089396036 = 10537^2 + 33006^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200424405 - 2¹ = 1200424403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200424403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4139250 + ... + 4139539.

It is an arithmetic number, because the mean of its divisors is an integer number (186272775).

Almost surely, 2^1200424405 is an apocalyptic number.

It is an amenable number.

1200424405 is a deficient number, since it is larger than the sum of its proper divisors (289757795).

1200424405 is an equidigital number, since it uses as much as digits as its factorization.

1200424405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8278823.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1200424405 is about 34647.1413683727. The cubic root of 1200424405 is about 1062.7838315305.

Adding to 1200424405 its reverse (5044240021), we get a palindrome (6244664426).

The spelling of 1200424405 in words is "one billion, two hundred million, four hundred twenty-four thousand, four hundred five".