1200320042 has 8 divisors (see below), whose sum is σ = 1807486596. Its totient is φ = 597824512.

The previous prime is 1200320039. The next prime is 1200320047. The reversal of 1200320042 is 2400230021.

It can be written as a sum of positive squares in 2 ways, for example, as 780029041 + 420291001 = 27929^2 + 20501^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1200319999 and 1200320026.

It is not an unprimeable number, because it can be changed into a prime (1200320047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167113 + ... + 1168140.

Almost surely, 2^1200320042 is an apocalyptic number.

1200320042 is a deficient number, since it is larger than the sum of its proper divisors (607166554).

1200320042 is a wasteful number, since it uses less digits than its factorization.

1200320042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335512.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1200320042 is about 34645.6352517889. The cubic root of 1200320042 is about 1062.7530317225.

Adding to 1200320042 its reverse (2400230021), we get a palindrome (3600550063).

The spelling of 1200320042 in words is "one billion, two hundred million, three hundred twenty thousand, forty-two".