1200042321 has 8 divisors (see below), whose sum is σ = 1611736224. Its totient is φ = 794188320.

The previous prime is 1200042317. The next prime is 1200042329. The reversal of 1200042321 is 1232400021.

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

It is not a de Polignac number, because 1200042321 - 2² = 1200042317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200042321.

It is not an unprimeable number, because it can be changed into a prime (1200042329) 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, 1459495 + ... + 1460316.

It is an arithmetic number, because the mean of its divisors is an integer number (201467028).

Almost surely, 2^1200042321 is an apocalyptic number.

It is an amenable number.

1200042321 is a deficient number, since it is larger than the sum of its proper divisors (411693903).

1200042321 is a wasteful number, since it uses less digits than its factorization.

1200042321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919951.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1200042321 is about 34641.6269970104. The cubic root of 1200042321 is about 1062.6710614728.

Adding to 1200042321 its reverse (1232400021), we get a palindrome (2432442342).

The spelling of 1200042321 in words is "one billion, two hundred million, forty-two thousand, three hundred twenty-one".