1200021430 has 8 divisors (see below), whose sum is σ = 2160038592. Its totient is φ = 480008568.

The previous prime is 1200021401. The next prime is 1200021451. The reversal of 1200021430 is 341200021.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1200021430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60001062 + ... + 60001081.

It is an arithmetic number, because the mean of its divisors is an integer number (270004824).

Almost surely, 2^1200021430 is an apocalyptic number.

1200021430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200021430 is a deficient number, since it is larger than the sum of its proper divisors (960017162).

1200021430 is a wasteful number, since it uses less digits than its factorization.

1200021430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120002150.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1200021430 is about 34641.3254654033. The cubic root of 1200021430 is about 1062.6648949153.

Adding to 1200021430 its reverse (341200021), we get a palindrome (1541221451).

The spelling of 1200021430 in words is "one billion, two hundred million, twenty-one thousand, four hundred thirty".