1200243402 has 12 divisors (see below), whose sum is σ = 2600527410. Its totient is φ = 400081128.

The previous prime is 1200243397. The next prime is 1200243439. The reversal of 1200243402 is 2043420021.

1200243402 is a `hidden beast` number, since 1 + 20 + 0 + 243 + 402 = 666.

It can be written as a sum of positive squares in only one way, i.e., 814474521 + 385768881 = 28539^2 + 19641^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 66680189 = 1200243402 / (1 + 2 + 0 + 0 + 2 + 4 + 3 + 4 + 0 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33340077 + ... + 33340112.

Almost surely, 2^1200243402 is an apocalyptic number.

1200243402 is an abundant number, since it is smaller than the sum of its proper divisors (1400284008).

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

1200243402 is a wasteful number, since it uses less digits than its factorization.

1200243402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66680197 (or 66680194 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1200243402 is about 34644.5291785009. The cubic root of 1200243402 is about 1062.7304124423.

Adding to 1200243402 its reverse (2043420021), we get a palindrome (3243663423).

The spelling of 1200243402 in words is "one billion, two hundred million, two hundred forty-three thousand, four hundred two".